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.
Preview: Boys Soccer Finals Guaranteed to Provide Unforgettable Finishes
By
Geoff Kimmerly
MHSAA.com senior editor
October 31, 2025
A first-time champion guaranteed in Division 1.
The possibility of two teams finishing this fall undefeated.
A Division 3 team making the MHSAA Boys Soccer Finals despite entering the tournament unranked.
A potential repeat champion, and another contender seeking its first title this century.
The program with the most Finals wins looking to add one more, and a contender coming off defeating the top-ranked team now seeking to finish No. 1.
Those are just a few storylines heading into Saturday’s season-concluding matches at Grand Ledge High School.
Saturday’s first Final will be Division 4 at 10 a.m., followed by Division 3 at 12:30 p.m., Division 2 at 3:30 and Division 1 at 6 p.m. Tickets cost $11 and may be purchased online only at GoFan. All four Finals also will be broadcast and available with subscription on the NFHS Network.
Division 1 | Division 2 | Division 3 | Division 4
Below is a glance at all eight contenders, with statistics through Regionals:
Division 1
ANN ARBOR HURON
Record/rank: 17-1-3, No. 2
Michigan Power Rating: No. 4
Coach: Luis Gomez-Dominguez, seventh season (66-44-16)
League finish: Second in Southeastern Conference Red
Championship history: Has never appeared in an MHSAA Final.
Players to watch: Kinley Poole, sr. F (12 goals, 10 assists); Malic Kasham, sr. F (13 goals, 4 assists); Philip Leucht, sr. M (7 goals, 3 assists); Matthew Pletcher, sr. GK (9 shutouts).
Outlook: Huron over the last two weeks has celebrated its first Regional championship and now first trip to the Finals, after navigating a tournament path that’s included wins over No. 13 Dearborn Edsel Ford and honorable mentions Troy Athens and Detroit U-D Jesuit. The River Rats have shut out their last three opponents and given up only seven goals all fall, with their lone loss 1-0 to Saline as the rivals split their season series. Pletcher made the all-state second team last season, and Poole and Leucht earned honorable mentions.
PORTAGE CENTRAL
Record/rank: 23-0-2, No. 1
Michigan Power Rating: No. 2
Coach: Tim Halloran, 12th season (175-57-28)
League finish: First in Southwestern Michigan Athletic Conference
Championship history: Has never appeared in an MHSAA Final.
Players to watch: Gunnar Thorhallsson, sr. GK (0.26 goals-against average, 17 shutouts); Max Bailey, sr. F (12 goals, 21 assists); Carter Seim, soph. M (11 goals, 11 assists); Marshall Neumann, sr. M (6 goals, 8 assists).
Outlook: Portage Central also won its first Regional title last week on the way to this first Finals appearance, and defeated No. 5 Clarkston in a Semifinal shootout to get here. But Halloran has plenty of experience coaching on the season’s last day, as he led Hackett Catholic Prep’s girls to three Division 4 titles and two runner-up finishes over a 14-year run ending in 2010. This is his second tenure with Central; he previously coached from 2008-14 and took over again in 2021. Thorhallsson has qualified for the MHSAA single-season shutouts list this fall and made the all-state third team last season. Bailey made the second team, and Neumann also made the third team in 2024. Seniors Gavan Sherman and Oliver Ruggiero also both had 10 goals entering the week.
Division 2
HUDSONVILLE UNITY CHRISTIAN
Record/rank: 19-0-4, No. 2
Michigan Power Rating: No. 5
Coach: Ian Billin, fourth season (67-9-12)
League finish: First in Ottawa-Kent Conference Black
Championship history: Six MHSAA titles (most recent 2023), four runner-up finishes.
Players to watch: Jackson Kamminga, sr. M/F (12 goals, 4 assists); Logan Lutke, sr. D/M (3 goals, 3 assists); Jack VanEyk, sr. M (15 goals, 12 assists); Alen Deppe, jr. GK (0.35 goals-against average).
Outlook: Unity is seeking its second Finals championship in three seasons and first in Division 2 since 2012 after most recently winning Division 3 in 2023. The Crusaders defeated honorable mentions Holland Christian and Holland High, No. 12 Mason, No. 6 Edwardsburg and then Cedar Springs to get here, and also downed No. 10 Grand Rapids South Christian during the regular season. Opponents have scored only eight goals against them. Kamminga made the all-state third team and Lutke earned an honorable mention last season.
WARREN DE LA SALLE COLLEGIATE
Record/rank: 20-4-2, No. 4
Michigan Power Rating: No. 15
Coach: Thaier Mukhtar, 37th season (616-147-99)
League finish: Third in Catholic High School League Central
Championship history: Six MHSAA titles (most recent 2024), one runner-up finish.
Players to watch: Dominic Baldarotta, jr. GK (0.65 goals-against average); Max Wyszczelski, sr. D (2 goals, 4 assists); Nikolai Zacharko, sr. M (10 goals, 15 assists); Andrew Corder, jr. F (38 goals, 15 assists).
Outlook: A year after winning their first championship since 2005, the Pilots are seeking their second in a row led by several players with big-game experience. Corder and Baldarotta made the all-state first team last season, Zacharko made the second team and Wyszczelski made the third. After finishing third in their league to Division 1 No. 11 Detroit Catholic Central and U-D Jesuit, De La Salle has outscored its six postseason opponents by a combined 31-2 – with shutouts of No. 9 Melvindale and No. 5 Bloomfield Hills Cranbrook Kingswood in its last two matches and a 6-1 win over No. 3 New Boston Huron in the Regional Semifinal.
Division 3
DETROIT COUNTRY DAY
Record/rank: 21-2-1, No. 2
Michigan Power Rating: No. 1
Coach: Steve Bossert, 11th season (165-54-24)
League finish: Does not compete in a league.
Championship history: 15 MHSAA titles (most recent 2018), two runner-up finishes.
Players to watch: Tino Haratsaris, sr. M (22 goals, 19 assists); Evan Stark, sr.; Micah Zacks, sr. F (15 goals, 14 assists); Mitchell Hamway, jr. GK (0.90 goals-against average).
Outlook: Country Day also most recently finished Division 3 runner-up two years ago and has its most wins in one season under Bossert, who now has led the team to three championship matches. The Yellowjackets’ only losses this season were to No. 4 Ann Arbor Greenhills and Division 2 top-ranked Grand Rapids Forest Hills Central, and they defeated Division 3 Flint Powers Catholic and No. 7 Alma during the regular season before a tournament run that’s included victories over top-ranked Pontiac Notre Dame Prep, No. 6 Grosse Ile and Greenhills among others. Haratsaris made the all-state first team last season, and Stark and Zacks made the second team.
SOUTH HAVEN
Record/rank: 18-4-4, unranked
Michigan Power Rating: No. 14
Coach: Randy Bautista, first season (18-4-4)
League finish: Second in Southwestern Athletic Conference Lakeshore
Championship history: Division 3 co-champion 2003, three runner-up finishes.
Players to watch: Noah Weaver, sr. F (17 goals, 8 assists); August Zoet, sr. F (24 goals, 4 assists); Levi DeLaRosa, sr. F/M (10 goals, 15 assists); Angel Barajas, jr. M (5 goals, 13 assists).
Outlook: South Haven has won 11 of its last 12 games on the way to making the Finals for the first time since finishing Division 3 runner-up in 2009. The path has been one of the toughest in any division. The Rams in the Semifinal handed No. 14 Fremont its only loss this season, and South Haven also defeated No. 15 Fennville, No. 8 Grand Rapids NorthPointe Christian, No. 11 Grand Rapids Catholic Central and No. 12 Paw Paw over its last five games – all decided by one goal. The Fennville win avenged a 2-1 league title-deciding loss. Weaver earned an all-state honorable mention last season.
Division 4
GROSSE POINTE WOODS UNIVERSITY LIGGETT
Record/rank: 19-2-1, No. 6
Michigan Power Rating: No. 2
Coach: David Dwaihy, 11th season (156-37-13)
League finish: First in Catholic High School League Intersectional 1
Championship history: Four MHSAA titles (most recent 1999), four runner-up finishes.
Players to watch: Ravi Hines, sr. GK (0.40 goals-against average); Ollie Cooley, jr. M (6 goals, 10 assists); Brady Ancona, jr. M (12 goals, 14 assists); Brendan Logan, fr. F (13 goals, 5 assists).
Outlook: Liggett is making its first Finals trip since finishing Division 4 runner-up in 2019, and has four shutouts over its six tournament games despite navigating postseason matches with No. 12 Detroit Cristo Rey, No. 9 Allen Park Inter-City Baptist, honorable mention Hillsdale Academy, No. 8 Plymouth Christian Academy and No. 4 Lansing Christian. The Knights have improved seven wins from a year ago and tied their most under Dwaihy. They start only four seniors, with multiple underclassmen playing key roles.
LELAND
Record/rank: 15-8-2, No. 10
Michigan Power Rating: No. 11
Coach: Rob Sirrine, fifth season (78-34-6)
League finish: Tied for first in Northwest Conference
Championship history: Division 4 champion 2018.
Players to watch: Ravell Smith, sr. GK (0.72 goals-against average); Eli Ulbrich, sr. D (3 goals); Ignacio Creamer, sr. M (12 goals, 14 assists); Adrian Spencer, sr. M (16 goals, 3 assists).
Outlook: Leland has won three Regional titles over the last four seasons and broke through for its second championship match appearance with a 2-1 Semifinal win over top-ranked Grandville Calvin Christian. The Comets also defeated No. 3 North Muskegon in their Regional Final and clinched the District title with a shutout of Maple City Glen Lake, with which it shared the league championship. Smith made the all-state first team last season, Ulbrich and Creamer made the third team and Spencer earned an honorable mention. Senior forward Weston Burda had added another 15 goals and six assists heading into this week.
PHOTO Levi DeLaRosa celebrates during South Haven's 2-1 Semifinal win over Fremont on Wednesday. (Photo by Michigan Sports Photo.)