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.
Thankful for Lifesavers Who Rushed to His Aid, Sanders Aims to Officiate Again
By
Doug Donnelly
Special for MHSAA.com
January 14, 2025
Doug Sanders sat quietly thinking about how to best describe what he went through the day after Thanksgiving at Monroe Jefferson High School.
Finally, he just said it.
“Basically, I died twice,” he said, almost apologetically.
Sanders, 56, was officiating a boys varsity basketball game between Petersburg-Summerfield and Jefferson when he collapsed. First responders who were in attendance quickly got to Sanders and began performing life-saving procedures.
Responders performed chest compressions. Twice they used a defibrillator to shock him. He regained consciousness once only to inform the responders they were hurting his chest, then his heart stopped again.
When he left Jefferson that night on a stretcher, he was alert.
“I’ve never seen anything like that in my 24 years coaching,” Summerfield coach Phil Schiffler said. “I’ve seen gruesome things, compound fractures and things, but never someone pass like that, especially someone who was an official, in charge of the game.
“Thank God for the first responders there that night.”
Petersburg residents Matt LaRocca and Aaron Myshock were the first to assist Sanders on the court. Others helped as well, including Summerfield athletic director Kelly Kalb, former Summerfield athlete Brendan Dafoe, a nurse; and Angela Prush, who works at Monroe County Community College as a clinical educator in the respiratory therapy program. Jefferson athletic director Alyssa Eppler helped on the scene as well.
“There was no hesitation,” Kalb said. “As soon as Doug went down, Matt and Aaron took off to the court and got to Doug. Everyone played a role. It was a great collaboration."
Kalb said the MHSAA this year implemented a new policy requiring schools to have an Emergency Action Plan in the event of this very type of emergency. That plan, she said, definitely helped both schools as they responded.
“We lost him a couple of times,” she said. “It was scary.”
Sanders knew something was wrong during the game. Moments before falling to the floor he called over one of his officiating partners, Steve Rechsteiner, and said something was wrong. He asked him to get him some water and said he felt light-headed.
“I said, ‘Help me,’” Sanders said. Moments later, he went to the floor.
As responders attended to Sanders, officials from both schools cleared the gymnasium of spectators and players, and the game was called. Players and fans left the gymnasium that night unsure of the events that had just unfolded in front of them.
“It’s amazing how it all happened,” said Sanders, who has been a registered MHSAA official for more than 30 years. “If I would have been driving or anywhere else when it happened, I may not be here today to talk about it.”
Sanders has had a history of heart problems, and those run in his family. About four years ago, he had open-heart surgery. Officiating another game a few nights before the incident at Jefferson, he had collapsed during a timeout. He was under doctor’s care but felt well enough to return to the court after enjoying Thanksgiving with his family.
The game between Summerfield and Jefferson went into the fourth quarter. That’s when Sanders began to feel something was wrong.
“I am so blessed and grateful to be where the right people were with me,” Sanders said. “I had the right people there at the right time.”
After being transported to a nearby hospital in Monroe, he was sent to another in Toledo. He spent several days in the hospital undergoing heart tests and procedures. He went home for recovery and recently started attending basketball games in the area again.
“People have been so nice through all of this,” he said. “I’ve gotten messages and cards and calls and texts from people all over the place, people I don’t even know. A lot of the officials that I’ve worked with have reached out to me. It’s really a close-knit group.”
Thankfully, his heart is improving.
Sanders is a 1987 graduate of Ottawa Lake Whiteford. He got his start as a referee for youth basketball at Whiteford Elementary School. Then-athletic director John Flynn encouraged him to get his MHSAA registration, and helped him get it. Soon after, Flynn was assigning him middle school games.
Over the years, Sanders began umpiring baseball and added refereeing football a few years ago.
He loves sports and being close to the game.
“That’s why I do it,” he said. “I wanted to be a basketball official because I enjoy working with the student-athletes. I like the exercise, especially during the wintertime. Outside it’s snowy and wet, and this was a way to get out and do something.”
He’s busiest during basketball season where he is assigned as many as four or five games a week. In 2022, he officiated a boys Semifinal game at the Breslin Center. He rarely slows down or takes nights off.
Since the incident, Sanders has been going through a series of tests on his heart and has had an ICD – or implantable cardioverter defibrillator – installed in his chest. An elementary school teacher in Toledo, he expects to return to work soon.
He’s met some of the first responders who helped save him that night at Jefferson but still isn’t sure just how many people played a role. He’s grateful the district had a defibrillator nearby – and especially that people were there who knew how to use it.
Schiffler said people just sprang into action, like they were trained to do.
“I was shook. I’m not going to lie,” he said. “The people who were trained in that knew just what to do.”
LaRocca and Myshock were there watching their sons play on the Summerfield team. Dafoe, who played sports at Summerfield and with Sanders as his referee and umpire on a number of occasions, has a brother on the varsity team.
Sanders is tentatively scheduled to referee a game at Adrian Lenawee Christian on Monday, Jan. 20. He can’t wait to shake the rust off, put on the striped shirt and blow his whistle. He knows there will be eyes on him throughout the game.
“I’ve had so many people tell me, ‘Take the rest of the winter off, don’t come back too early,’” Sanders said. “I want to get back out there. Something tells me in my heart and soul that I’m ready. I had my stress test, and I did well. Am I ready? I want to say yes. I think so. Only time will tell.”
Doug Donnelly has served as a sports and news reporter and city editor over 25 years, writing for the Daily Chief-Union in Upper Sandusky, Ohio from 1992-1995, the Monroe Evening News from 1995-2012 and the Adrian Daily Telegram since 2013. He's also written a book on high school basketball in Monroe County and compiles record books for various schools in southeast Michigan. E-mail him at [email protected] with story ideas for Jackson, Washtenaw, Hillsdale, Lenawee and Monroe counties.
PHOTOS (Top) MHSAA official Doug Sanders monitors the action during a 2022 Division 4 Semifinal between Wyoming Tri-unity Christian and Genesee Christian. (Middle) Bradley is in uniform for a baseball game. (Below) Bradley makes a call behind the plate during a Monroe County Fair youth softball tournament game at least a decade ago. (Middle photo courtesy of Doug Sanders. Below photo by Kim Brent, courtesy of the Monroe News.)