Soccer, Hoops Next to Seed Using MPR
August 6, 2019
By Rob Kaminski
MHSAA benchmarks editor
As the topic of seeding for MHSAA Tournaments continues to swirl in the air of numerous committee meetings on an annual basis, one of the primary concerns continues to focus on the simple question: “How?”
The MHSAA for years has been working behind the scenes on potential formulas which could best be used as a standardized tool to assist in measuring strengths of teams in a given sport.
This spring, the MHSAA introduced the Michigan Power Rating in the sport of Boys Lacrosse. The Representative Council approved limited seeding beginning in 2019-20 for girls and boys soccer and girls and boys basketball, and MPR will be the metric to determine which two teams must be seeded on opposite sides of District brackets in those sports.
“The boys lacrosse tournament has been seeded since it was added as an MHSAA-sponsored sport in 2005. The seeding is done by committee based on several criteria, one of which was statewide power rankings generated by a third-party website. In the Fall of 2018, that website ceased operation – it was the perfect opportunity for the MHSAA to develop its own data-driven, purely objective ratings system and incorporate that data into the seeding criteria,” said Cole Malatinsky, administrative assistant for the sport.
“The benefits of the new MPR system have been already mentioned – it is MHSAA controlled, simple, objective, and transparent, and it can be used by other MHSAA sports in the future.”
MPR is a computer rating formula similar to the popular RPI rating. MPR provides a way to measure a team’s strength relative to other teams, based on games played against other MHSAA tournament teams, largely on the strength of their opponents’ schedules. MPR is purely objective using only the game results listed on MHSAA.com – there is no subjective human element.
What is the basic MPR formula?
MPR is calculated using wins, losses and ties for games played between teams entered into the MHSAA tournament. The final MPR number is 25% of the team's winning percentage, plus 50% of its opponent's winning percentage, plus 25% of its opponent's opponent's winning percentage.
MPR = (.25 x W%) + (.50 x OW%) + (.25 x OOW%)
The MPR formula can be applied easily to other MHSAA team sports.
What game data is included in the formula? What game data is not?
MPR looks only at results between opponents entered into the MHSAA postseason tournament. Wins, losses and ties in multi-team shortened game tournaments (lacrosse, soccer) also count. Forfeits also are counted as wins and losses.
MPR does not use the specific scores of a game or the margin of victory in a game. The location of a game is not included in the MPR formula, and the formula weighs results at the beginning of the season the same as results at the end of the season. Scrimmages are not included.
Why use the MPR formula?
Different rating systems have been used in the past or have been recommended to the MHSAA. We wanted to have a rating system where the data was controlled and stored in house and could be used for any sport featuring head-to-head competitions.
With its own rating system the MHSAA also can control the different components of the formula, thus keeping the tenets of scholastic competition at the forefront (like not including margin of victory in the formula). Finally, by listing all scores and team schedules online, as well as showing the MPR calculator on each team schedule page, the ratings are transparent and can be replicated easily.
CALCULATING MPR
What are the detailed components of the MPR formula?
You need three numbers to calculate your MPR: winning percentage (W%), opponent’s winning percentage (OW%) and opponent’s opponent’s winning percentage (OOW%).
How do you calculate winning percentage (W%)?
Divide the number of wins by the number of total games played. A tie is worth half a win. For MPR purposes, find the winning percentage against all teams that will play in the MHSAA tournament (MPR W%). Games played against out-of-state teams, varsity “B” teams, junior varsity teams, non-school club teams, and any other non-MHSAA tournament participants should not be included when calculating winning percentage. W% should be an easy number to calculate.
How do you calculate opponent’s winning percentage (OW%)?
Average the winning percentages of a team's opponents. When calculating the winning percentage of a specific opponent, use the opponents "Adjusted Winning Percentage" (ADJ W%). Adjusted winning percentage eliminates all games the team played against that opponent (as well as its games against non-MHSAA opponents).
For instance, if the team beat an opponent with an overall record of 4-1, use a record of 4-0 (1.000) for that opponent. If the team lost to an opponent, use a record of 3-1 (.750). Find the ADJ W% for all opponents, and then take the average. If a team plays an opponent team twice, that opponent’s ADJ W% will be counted twice.
OW% is not calculated via the combined record of the opponents; instead take the average of all opponent’s winning percentages.
How do you calculate opponent’s opponent’s winning percentage (OOW%)?
Use the same process described above, except calculated for the opponents of a team's opponents. This number is much harder to manually calculate, so the OW% for every team is listed on the MPR page of the MHSAA website.
Again, simply take the average of all opponent’s OW%.
How often is MPR calculated?
MPR is calculated about every five minutes. Enter a score and a minutes later the team MPR and the MPR of all the team's opponents will update.
How much will my MPR change throughout the season?
You will see wild MPR swings in the beginning of the season, but after about 10 games played your MPR will start to level out. At 20 games played you will see very little movement with each additional game played.
My score is missing. How can it be added?
This is a crowd-sourced system. Any registered user of MHSAA.com can add a missing score. ADs, coaches, parents, students and fans all can login and enter a score for any game.
What are some common errors when calculating MPR?
When calculating your team’s winning percentage, only include games against MHSAA-tournament teams. When calculating your opponent’s winning percentage, don’t include the games they played against you. When calculating ties, count the game as a half-win and half-loss.
What happens if a game is cancelled?
Because the MPR system works off of averages, it will not make a difference in the final MPR if a game cannot be rescheduled. It would not penalize, nor benefit, any team involved in that scenario.
USING THE WEBSITE
Where can I find game scores?
A list of statewide scores for all sports can be found in the MHSAA Score Center. To find a schedule for any team click on “Schools & Schedules” in the top navigation bar, search for the school, then once on the school page click the sport. You can also see a list of all schools (with links to schedules), on the statewide MPR list.
“We continue to have great success in score reporting for varsity boys lacrosse contests. While we state that schedule submission and score reporting to MHSAA.com are required, athletic directors and coaches understand that in order for MPR data to be accurate, we need consistent and accurate score reporting,” said Malatinsky. “MHSAA.com is now the primary site for high school boys lacrosse schedules, results and ratings in the state.”
How should I use the statewide list of teams and MPR?
Linked to the boys soccer page (and eventually to be added for both basketball pages and girls soccer) is a statewide listing of all Michigan Power Ratings (MPR) for teams entered into the MHSAA postseason tournament for that sport. Linked on the MPR page is an explanation of the District draw formula, describing when and how teams will be placed on the bracket.
The MPR data updates every five minutes. Click on the column headings to sort the data. You also can use the drop-down menu to show teams in one Division, or type a District number in the box to filter teams for that District (Region for boys lacrosse).
You also can click on any school name to go to its schedule page.
How do I read the school schedule page?
The schedule at the top of the page shows the date and opponent for all scheduled games, and results for games already played. If results are missing, click “Submit Score” to add a game score.
Below the game schedule is the MPR Calculator. The calculator is split into three sections. The first section shows the three MPR component scores for the team, as well as the team’s current MPR score. The second section shows the MPR information for the team’s opponents – specifically, for the opponents the team already has played (actually, for games where scores have been submitted). Only these games are included in the MPR calculation.
The third section highlights future opponents. The MPR data for future opponents are not used in the MPR calculation for the team.
PHOTO: East Kentwood and Ann Arbor Skyline play for last season’s Division 1 boys soccer championship.
Title IX at 50: Regina's Laffey Retiring as Definition of Legendary
By
Tom Markowski
Special for Second Half
April 5, 2022
At a time many coaches and school administrators seemingly come and go like billboard signs on the highway, there are a few who, over time, become part of the fabric of their school and community.
Diane Laffey is one such person.
Some perspective on how long Laffey has been coaching: President John F. Kennedy was still alive when Laffey was about to enter her second season as a head varsity basketball coach.
How many of you remember that sad day in November of 1963 in Dallas or did you simply read about Kennedy’s death years later? Laffey literally has been involved in high school activities for what amounts to a lifetime for many.
The word 'legend' is often misused when applied to an individual who has achieved greatness over a long period of time. But in Laffey's case, it fits her like a woolen mitten in mid-January.
Laffey, 83, started coaching girls basketball in 1962 at St. Anthony, on Detroit's near eastside. The following spring she began her first season as the head varsity softball coach. When St. Anthony merged with Detroit East Catholic and Detroit St. Elizabeth in 1969 to form one high school, East Catholic, Laffey remained for one season before taking over both programs at Harper Woods Regina, an all-girls school, in 1970. Dave Soules, the boys basketball coach at East Catholic at the time, tried to convince Laffey to stay, but to no avail.
With that move Laffey found a home, a home she would care for for years to come. On June 30, Laffey will officially retire from her position as the school's athletic director and as the head coach of the two varsity sports which have been so much a part of her life for seven decades.
When one coaches for 60 seasons, the number of victories, titles and championships can boggle the mind. Laffey has had more than her share of success winning seven MHSAA Finals softball titles, the latest coming in 2019, and reaching four Final Fours in basketball. And Laffey's teams always competed at the highest level, in the Detroit Catholic League Central, and in the MHSAA tournaments. Due to a decline in enrollment Regina moved from Division 1 to Division 2 in basketball two seasons ago. Laffey opted to remain in Division 1 in softball and will continue to compete at that level this spring.
As enticing as retirement might sound, making that important decision can be difficult. Change can be a challenge, especially to one who has dedicated herself with such passion and for such a long time in a profession where the reward is more often a pat on the back, a kind word or the return of former students who just want to say thanks.
There's a saying that needs repeating. It isn't work if you love what you're doing.
“It was hard,” Laffey said. “It's a very hard decision for me to make.”
It's not a stretch to say Laffey and the Catholic League have almost become synonymous over the years. And this relationship began well before her coaching career. Her father Jack 'Red' Laffey was the basketball and football coach at Detroit St. Charles and Detroit Nativity, where his daughter played basketball and softball before graduating in 1957. Her father died when Laffey was in the eighth grade, but she was around him long enough to know that coaching was in her blood.
“I was in the gym a lot,” Laffey said. “He was down to earth, but he could yell (at his players) when he had to. He cared about the kids. He was tough, but deep down he loved his kids.”
For those who know Diane Laffey, it's as if she was talking about herself when making that statement.
Her teams have been an extension of herself. They’ve worked hard. They’ve played the game with passion but without a bravado one might see in other teams that have achieved similar success.
After high school, Laffey received her undergraduate degree from the University of Detroit and then went to Wayne State University, where she earned her master’s in guidance and counseling. There was no question what she wanted to do with her life. It was just a question of where.
Most of her time was spent as a physical education teacher, but she did teach Spanish at St. Anthony and was a guidance counselor before becoming Regina's athletic director in 1977. Remember, Laffey coached two sports every season for 60 years. And if this wasn't enough, she coached softball at Wayne State from 1978-81 without taking time away from her duties at Regina – although she eventually left Wayne State because she said the time she spent coaching in college took time away from her responsibilities, her players, at Regina.
That doesn't mean her time at Wayne State didn't have it moments. There was one instance where the proper paperwork wasn't filled out in order for Wayne State to compete in a tournament. Faced with the problem of not having her team compete, Laffey met with former MHSAA Communications Director John Johnson, who was the sports information director at Western Michigan at the time, and Johnson came through by contacting a Detroit newspaper and obtained the paperwork needed for Wayne State to compete. Laffey said she was forever in debt to a person she would work with many times in the future.
Laffey has been the recipient of numerous awards – most notably her induction into the Michigan Sports Hall of Fame and the National Federation of State High School Associations’ Hall of Fame – yet those honors are not what she'll remember most when her career comes to a close. No, it'll be the same reason why she entered the profession of education – people, most notably her students and assistant coaches.
Her coaching staff this basketball season consisted of Emily Frikken and Kevin Reese. Kerri Kelly, Marisa Mugley, Mike Roeske and Frikken assist her in softball. Frikken and Mugley both played for Laffey.
Frikken played basketball and softball for four seasons before graduating in 2009. Frikken's perspective is quite unique in that she attended Regina the last two years the school was located in Harper Woods and was part of the transition when the school moved to Warren in 2007. A 2013 Albion College graduate, Frikken joined Laffey's staff in 2019 after serving as athletic director, assistant basketball coach and head coach of the field hockey team at Livonia Ladywood.
Frikken played on the 2007 MHSAA Division 1 championship softball team, the program's fourth consecutive title. And in her first season as an assistant, Frikken helped Regina take home its most recent championship.
“That was a great experience,” she said. “(Winning) was so much better as a coach. You have an outside perspective. It was a proud moment. And we won in extra innings (3-2 over Howell). Watching (the players) excitement was amazing.”
For Frikken, the moment that's indelibly stamped in her memory is the one that took place minutes after that victory over Howell.
“Diane and I walked back to our cars,” she said. “And we had parked quite a distance from where most people parked, so we walked a while. It was just the two of us, and she asked me what it was like to be a part of something like that. I'll never forget that.”
Frikken first met Laffey at a summer basketball camp while she was still in middle school. There's a bit of a mystique that surrounds a person who has coached for so long and Frikken, like many others, had to remove that barrier before she became comfortable.
“From her, there's the intimidation aspect,” she said. “There (are) so many things she has done. But knowing her, she's very humble. She doesn't want all the attention she gets. She wants her players to have it.”
As to why Laffey has had so much success, Frikken said it comes down to basics.
“She keeps it simple,” she said. “She tells her players to play like you're capable of playing. She instills confidence. She brings a lot of passion to both sports.”
Laffey finished her basketball coaching career with 668 victories including four Catholic League titles. The victory total places her seventh overall and second among women's coaches in Michigan high school history behind Bloomfield Hills Marian's Mary Cicerone (707), who also retired following this past season.
In softball, Laffey is Michigan's all-time leader with 1,231 victories.
Like Frikken said, even though Laffey is one of the all-time greats in both sports, she prefers to deflect the attention to others.
“I've had some of the best assistants in the world,” Laffey said. “You have to have someone you can talk to, someone to bounce your ideas off of. Many of our coaches are former players. Our head JV softball coach is an alum. Our JV volleyball coach is an alum, and both the varsity and JV lacrosse coaches are alums. They know the school. They know the program. They kind of know what the program is like; what's expected.”
Laffey also gives kudos to the tremendous athletes she's had the opportunity to coach such as pitcher Nikki Nemitz, who later played at Michigan, and basketball players Sarah Judd (Oakland University) and Paula Sanders, the latter a Miss Basketball finalist and later a star player at Michigan State.
It's uncertain at this time who will become the new head coach in the two sports, but it's safe to assume Laffey will offer an opinion or two. Whomever those in school administration choose, the foundation for success has long been established.
Regardless of who it is, Frikken said she's a better coach and a better person having had Laffey as a coach and now having served as an assistant coach on Laffey’s staff.
“It's not about Xs and Os,” she said. “It's about building relationships with the students. It just wasn't the student-athlete who flocked to be around Diane. Even if you didn't play sports, you wanted to be around her. You can't count how many people she's had an impact on. As a coach, you want to make sure (the players) know you care. And make sure you are a role model for them.
“To play for someone like that is one thing. To coach alongside ... I've learned so much. Regina is very lucky to have her.”
It's not over yet. Laffey returns 10 seniors from a team that reached an MHSAA Regional Final a season ago. Regina won three consecutive softball league titles before Farmington Hills Mercy won the Central in 2021.
Whatever takes place this season, whether there's a league title or a long tournament run in store for her team, what matters most to Laffey is the student part of her student-athletes. She said of the five valedictorians in the school, three are members of her softball team including Abby Hornberger – who has been accepted to begin undergraduate studies at Princeton in the fall.
In the end, Laffey has been deeply touched by all of the attention she has received, especially in recent weeks since announcing her upcoming retirement.
“I've received so many emails congratulating me,” she said. “It's humbling. Very humbling.”
Second Half's weekly Title IX Celebration posts are sponsored by Michigan Army National Guard.
Previous Title IX at 50 Spotlights
March 29: Edison's Whitehorn named 2022 Miss Basketball - Read
March 22: Carney-Nadeau Sets Girls Hoops Standard with 78-Win Streak - Read
March 15: Binder Among Voices Telling Our Story on MHSAA Network - Read
March 8: 28 Years, Thousands of Cheers - Read
March 1: Kearsley Rolls On Among Girls Bowling's Early Successes - Read
Feb. 22: Marquette Ties Record for Swim & Dive Finals Success - Read
Feb. 15: Jaeger's 2004 Winter Run Created Lasting Connection - Read
Feb. 8: Marian's Cicerone to Finish Among All-Time Elite - Read
Feb. 1: WISL Award Honors Builders of State's Girls Sports Tradition - Read
Jan. 25: Decades Later, Edwards' Legend Continues to Grow - Read
Jan. 18: Iron Mountain Completes Championship Climb - Read
Jan. 11: Harrold's Achievement Heralds Growth of Girls Wrestling - Read
Dec. 20: Competitive Cheer Gives Michigan Plenty to Cheer About - Read
Dec. 14: Evelyn's Game Had Plenty of Magic - Read
Dec. 7: Council Term Ends, But Leinaar Leaves Lasting Impact - Read
Nov. 30: Basketball Season Ready to Add to Rich Tradition - Read
Nov. 23: Marysville Builds Winning Streak Yet to be Challenged - Read
Nov. 16: Wroubel Has Championed Girls School Sports from Their Start - Read
Nov. 9: Pioneer's Joyce Legendary in Michigan, National Swim History - Read
Nov. 2: Royal Oak's Finch Leading Way on Football Field - Read
Oct. 26: Coach Clegg Sets Championship Standard at Grand Blanc - Read
Oct. 19: Rockford Girls Set Pace, Hundreds After Have Continued to Chase - Read
Oct. 12: Bedford Volleyball Pioneer Continues Blazing Record-Setting Trail - Read
Oct. 5: Warner Paved Way to Legend Status with Record Rounds - Read
Sept. 28: Taylor Kennedy Gymnasts Earn Fame as 1st Champions - Read
Sept. 21: Portage Northern Star Byington Becomes Play-by-Play Pioneer - Read
Sept. 14: Guerra/Groat Legacy Continues to Serve St. Philip Well - Read
Sept. 7: Best-Ever Conversation Must Include Leland's Glass - Read
Aug. 31: We Will Celebrate Many Who Paved the Way - Read
PHOTOS (Top) Diane Laffey accepts the 1991 MHSAA Women in Sports Leadership Award, and at right hands the 2017 Division 1 softball championship trophy to her Regina players. (Middle) Laffey confers with her hitters during a 2015 Division 1 Semifinal.