![](/sites/default/files/imported/Photos/190806_MPR_2H.jpg)
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.
![Lansing Catholic celebrates its Division 2 Semifinal victory Friday night at Breslin Center.](/sites/default/files/2023-03/230317_2D2_2H_0.jpg)
Lansing Catholic Starts Rolling Late, Never Stops in Clinching Title Game Trip
By
Tom Kendra
Special for MHSAA.com
March 17, 2023
EAST LANSING – It took Lansing Catholic nearly three quarters to get going Saturday, but the Cougars flipped the switch just in time.
They never led until the closing seconds of the third quarter, but a 3-point barrage to open the fourth proved to be the difference in a 62-41 victory over previously-unbeaten Grand Rapids West Catholic in a Division 2 Semifinal at the Breslin Center.
“These kids are fighters,” said 10th-year Lansing Catholic coach Kacee Reid. “They take punches and they take punches and it looks like they’re down and out, but they come back. I never doubted that we were going to make a comeback tonight.”
Lansing Catholic (23-5) opened the final quarter with three consecutive triples from Gabby Halliwill, Anna Richards and Hannah Pricco to quickly turn a one-point deficit into an eight-point lead.
That run was just the start of a 32-10 scoring edge in the fourth quarter – turning that one-point deficit after three quarters into a 21-point victory.
The Cougars, who were in the Semifinals for the first time since 2004 and are seeking their first title since winning Class C in 1995, said playing one of the state’s most difficult regular-season schedules helped them prevail.
“Those tough games really prepared us,” said Lansing Catholic junior Anna Richards, who scored 17 of her game-high 28 points in the fourth quarter. “We’ve been down at halftime quite a few times, so we’ve learned we can come back from that.”
The Cougars, who won the Capital Area Activities Conference White, advance to take on Frankenmuth in the Division 2 title game at 6:15 p.m. Saturday.
West Catholic bolted out to a 15-4 lead early on and 17-6 by the end of the first quarter, but the Falcons struggled offensively for the rest of the night – scoring just three points in the second quarter, 11 in the third and 10 in the fourth.
One of the turning points came when Lansing Catholic switched to a 1-3-1 zone defense, which threw the Falcons out of rhythm.
West Catholic, which finished 26-1 with just three seniors, went through its longest power outage of the entire season at just the wrong time – going nearly 6 minutes without a point to open the fourth quarter.
“Those shots usually fall, and then they stopped falling,” said ninth-year West Catholic coach Jill VanderEnde, whose team is now 90-5 over the last four seasons. “We were unable to stop the bleeding fast enough.”
Senior Cadence Dykstra, who is headed to Division I Toledo next season, finished with a team-high 13 points and four rebounds. Reese Polega and Elisha Dykstra both scored nine points, and Emma Tuttle added six points and six rebounds.
Once the Cougars grabbed the lead early in the fourth quarter, they put the game away with an impressive showing at the free-throw line. Lansing Catholic made 27-of-33 free throws (82 percent), compared to 7-of-14 (50 percent) for West Catholic.
Another key to the win was rebounding, as the Cougars held a 32-22 edge on the boards and allowed very few second chances.
Lansing Catholic has now won 22 in a row, with its last loss coming in the sixth game of the season against Grafton Midview (Ohio). West Catholic hadn’t lost in almost a full calendar year, dating back to last year’s Division 2 title game against Detroit Edison.
The Cougars showed that remarkable composure and focus despite being a junior-led team. Five of the six players that Reid brought to the postgame press conference were juniors, with the only senior being Pricco.
“These girls are pretty composed,” Reid said. “We don’t get rattled too often, and that really showed tonight.”
Leah Richards scored 14 points with a game-high nine rebounds, Halliwill scored nine points and Pricco added five points and eight rebounds.
PHOTOS (Top) Lansing Catholic celebrates its Division 2 Semifinal victory Friday night at Breslin Center. (Middle) The Cougars’ Leah Richards (22) and West Catholic’s Reese Polega (32) contend for the opening tip-off.