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.
Stine Bringing Championship Formula to Lumen Christi After Marvelous Arbor Prep Run
By
Doug Donnelly
Special for MHSAA.com
November 25, 2025
One of the first things Scott Stine noticed when he started his new gig as girls basketball head coach at Jackson Lumen Christi wasn’t the historic dome where the Titans play or the trophy cases just inside the entrance to the school.
It was the fellow coaches on staff at Lumen Christi.
“Everybody knows who (football coach) Herb (Brogan) is, but he is not only one of the greatest coaches ever, but probably the nicest guy you will ever meet,” Stine said. “He’s so humble. I very much enjoy getting to know him better.”
There’s more.
“Here, you are just surrounded by so many great coaches. I think the cross country coach (Mike Woolsey) has 12 state championships. The golf coach (Dave Swarthout) has 18 or something like that. We have coaches who are complete Hall of Famers who are around here every day.
“Everybody has been welcoming. It’s gone as good as I could hope for.”
Stine was a highly-successful girls basketball coach at Ypsilanti Arbor Prep for the past eight seasons, winning eight District, five Regional and three Finals titles during his tenure. Last season was perhaps the biggest surprise of all when he led an Arbor Prep team that was 10-12 during the regular season to seven straight wins in the MHSAA Tournament and the Division 3 championship.
“For my last year there, it couldn’t have worked out any better,” Stine said. “I think even I didn’t expect that one.”
Stine, however, turned some heads across the state when he decided in May to leave Arbor Prep and a program he has been around since the launch of the school 14 years ago to coach girls basketball at Lumen Christi. He left the job of athletic director and assistant principal as well and is now teaching world history and economics in Jackson.
He said those close to him probably weren’t surprised by the move – although he loved coaching at Arbor Prep.
“It will always have a huge, special place in my heart,” he said. “Leaving the basketball program was one of the toughest decisions I’ve had to make in my life.”
He takes over the Lumen Christi team that was 19-7 last winter with one of the most celebrated freshmen in the state in Kenna Hunt. Athletic director Jesse Brown coached the team but helped lure Stine and his 157-47 record to Jackson. The Titans actually ended their season with a 31-28 Quarterfinal loss to Stine’s Gators.
“The transition here has been everything I hoped it would be,” Stine said. “You have a community that definitely care about excellence. Faith comes first, then academics. Sports are a big priority. At this point, there’s no reason not to be successful here.”
He noted the positive environment at Lumen Christi.
“There is just an excitement at the school in general,” he said. “I have a lot of football kids in class. They’ve been excited since day one to see what can happen with the girls program. It’s a great community.”
Stine graduated from Muskegon Oakridge in 1996 and Grand Valley State University in 2002. He was on the Arbor Prep staff under Rod Wells when the Gators won their first Finals title in 2016.
At Lumen Christi, he will build around four returning starters, including Hunt, Lucy Wrozek, Lily Ganton and Ruby Boyce. He also has a talented group of freshmen and sophomores and a host of multi-sport athletes.
“Our fall workouts were pretty much all freshmen and sophomores,” he said. “The seniors will help us. They have things to offer. I’m really excited about our freshmen.”
Freshman Tristin Johnson will be on varsity from day one. She’s a point guard who plays on the Lumen Christi football team.
“She’s tough,” Stine said.
One of his first tasks at Lumen Christi was to upgrade the schedule.
“Our schedule has to be one top five toughest in the state,” Stine said. “In the Catholic League we play (Toledo) Notre Dame twice, (Toledo) Central Catholic is going to be pretty good. We play Ann Arbor (Father Gabriel) Richard twice. Those are six games that are pretty tough.
“We play Michigan Center in our opener and they are solid. We are playing Salem. Rod (Wells) and I get to go against each other. That will be tough because he’s one of my best friends.”
Also on the schedule is Detroit Country Day, Anthony Wayne from Ohio – which won 25 games last year – and Rockford.
“Maybe it didn’t need to be quite as tough as it ended up,” Stine said. “I had to tell our parents, ‘Listen, we want to win every game. There’s no one who wants to win every game more than I do. But we’re going to lose some games, probably. That’s just the way it is. The key is, once we get to March, we’ll be ready. We’ll be challenged. We’ll have seen every type of team, every style.
“That recipe proved to work at Arbor Prep. We’re sticking to that.”
Doug Donnelly has served as a news and sports reporter at the Adrian Daily Telegram and the Monroe News for 30 years, including 10 years as city editor in Monroe. He's written a book on high school basketball in Monroe County and compiles record books for various schools in southeast Michigan. He is now publisher and editor of The Blissfield Advance, a weekly newspaper. E-mail him at [email protected] with story ideas for Jackson, Washtenaw, Hillsdale, Lenawee and Monroe counties.
PHOTOS (Top) Then-Arbor Prep coach Scott Stine pulls out his clipboard while monitoring his team’s play during last season’s Division 3 Semifinal against Niles Brandywine. (Middle) Stine talks things over with his Arbor Prep players during a break in the championship victory.