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.
McLaughlin Building Meridian Legacy with Record Scoring, Unmatched Success
By
Paul Costanzo
Special for MHSAA.com
January 15, 2025
Halen McLaughlin wasn’t aware she had broken the Sanford Meridian career scoring record when her coach called timeout to make sure the accomplishment was properly recognized.
She just knew she had hit a layup and was about to go to the free-throw line for a chance at a 3-point play, and she wasn’t super thrilled about the interruption.
“She was like, ‘Why are you calling a timeout? Are you trying to ice me?’” Meridian girls basketball coach Tanner Smith said. “I was like, ‘No, you just broke the record.’ For me, that shows she’s more of a team-first kid. She just knew she had to score to help us.”
McLaughlin has been scoring to help Meridian win games for three-plus seasons, and now she’s done it more than anyone to ever wear a Mustangs uniform. As a junior, she became the first girls basketball player in school history to eclipse 1,000 points, and on Jan. 9 she passed Ron Fillmore for the most in school history regardless of gender. Filmore’s old record was set at 1,641 in the early 1980s, and McLaughlin scored 30 in a win against Pinconning on a night she needed just 10 to break it. Her total is up to 1,689 with more than half this season to play.
“I couldn’t have done it without my teammates,” McLaughlin said. “I couldn’t have done it on my own. … It means a lot (to pass Fillmore). I have a lot of respect for him and what he’s done. I was told that he played three sports and was really solid at all of them. It’s cool that I was able to accomplish something like that, but honestly for me it was so surreal because I’ve put in so much time and effort and energy into this game.”
McLaughlin is averaging 28 points per game for the Mustangs, who are 7-2 on the season. For her career, she’s averaging 21.4 ppg.
But more important for her, she has a career winning percentage of .886, as Meridian is 70-9 during her time. The Mustangs haven’t lost a Jack Pine Conference game during McLaughlin’s career, a win streak that has reached 48 games, and they’ve won 20 or more games all of her three full seasons.
That’s a remarkable record on its own, but even more so when considering her freshman season was the first winning season for the program since 2011-12.
“Coming into high school, I knew how their record was and I wanted to change that,” she said. “I’ve never been one that liked losing. I’m a big competitor, and I definitely wanted to get more wins than they had been. So much has changed, and I’ve been so happy to be a part of that, to help put in the work and be a part of that, and help show the younger players how hard work can help change a program and impact a game.”
Smith knew before McLaughlin enrolled in the high school that she had the potential, along with a strong Class of 2024, to lead a program renaissance.
“I saw her back in seventh grade,” Smith said. “They were double-, triple-teaming her, and she’s got her head up, making all the right passes.”
By that time, years of work had already been put in by McLaughlin, who began playing as a second grader and moved on to travel ball as a fifth grader after being noticed by Tim Kolnytis with Fast Break out of Midland. She’d eventually move to the Michigan Mystics, but credits Kolnytis for helping jump-start her career.
While her parents are not basketball players, she also credits them. Her mom coached her first rec team, and her dad has spent countless hours with her in their driveway, working on her game.
“I always say that’s where I get my handle, from playing on rocks,” McLaughlin said. “There were times where we were out there until 12 at night, 1 in the morning. I fell in love with it. There’s just something about the ball bouncing up to me. If I’m having a rough day at school or anything, I would go outside and play basketball. It was an escape for me, and I just loved it.”
As ready as she was when she got to high school, her first game still provided a rude awakening, as McLaughlin managed just six points in a 36-20 loss against Freeland.
“(Coach Smith) got into me right away,” McLaughlin said. “He said, ‘You’re scoring the ball. That’s what we need you to do.’ It hit hard, but I knew I was better than what I showed. Ever since then, it was a reminder to me that no matter what, you have to give it your all. That was definitely a turning point for me.”
It was a turning point for the program, too. The Mustangs won their next 18 games, and McLaughlin averaged 17.5 points per game as a freshman.
She’s only improved, averaging between 23 and 24 points per game both of her next two seasons before settling in near 30 this year. She’s also filling the stat sheet in other ways, averaging 4.5 assists, eight rebounds and 5.1 steals per game this winter.
“You’re not going to take the ball from her; she’s that good of a dribbler,” said Smith, who called McLaughlin a three-level scorer who can finish equally well with either hand at the rim. “I think one huge trait that people overlook is that she’s a phenomenal passer. … I think some people question her top-end speed, but to me, she’s like a comparison to Luka Doncic. She’s not going to blow you away with super speed, but she plays with pace and has a variety of moves and counters to get her to where she needs to be.”
McLaughlin is zeroing in on a college decision, with Lake Superior State and Wayne State as her finalists. When that announcement is out of the way, all her focus can turn to helping the Mustangs win a third District title during her four years. Her main goal, however, is to win the program’s first Regional title, something she and her teammates were a game away from accomplishing a year ago.
“Since I was a freshman in high school, I always wanted to have a Regional win on the board,” McLaughlin said. “All these achievements, all these awards are amazing, and I’m so blessed and grateful. But for me, it’s about winning. I want Meridian, these girls, to have a Regional win on the board. That’s the goal for me.”
Paul Costanzo served as a sportswriter at The Port Huron Times Herald from 2006-15, including three years as lead sportswriter, and prior to that as sports editor at the Hillsdale Daily News from 2005-06. He can be reached at [email protected] with story ideas for Genesee, Lapeer, St. Clair, Sanilac, Huron, Tuscola, Saginaw, Bay, Arenac, Midland and Gladwin counties.
PHOTOS (Top) Sanford Meridian’s Halen McLaughlin puts up a layup against Hemlock during last season’s District Final win at Pinconning. (Middle) McLaughlin holds up the celebratory basketball she received after becoming her school’s all-time leading scorer. (Photos courtesy of the Sanford Meridian girls basketball program.)