Past Wildcats Bringing Valuable Experiences Home as Three Rivers' New Hoops Coaches
By
Scott Hassinger
Special for MHSAA.com
December 2, 2025
THREE RIVERS – Basketball has always been a passion for rookie Three Rivers coaches Drew Bosma and Michael Morrison.
The two former Wildcats aim to bring that same level of energy they exhibited during their playing careers as they embark on their first varsity coaching stints.
Both Bosma and Morrison have brought along a few familiar faces as they begin working to rebuild Three Rivers' strong basketball tradition.
Bosma, a 2009 graduate, replaced long-time mentor Brian Burg as the Wildcats' varsity boys coach, while Morrison has taken the reins of the girls program from Carley Shoesmith.
As a student-athlete at Three Rivers, Bosma excelled in football, basketball, baseball and track & field. He continued his playing career at Alma College and Liberty University before returning home and completing his undergraduate studies in psychology through online courses.
"My psychology background has been useful in my coaching career. The kids you work with have so many different issues they encounter than when I was in school," said Bosma, who is employed in the RV Industry at Grand Design in Elkhart, Ind.
Bosma's early shift works out perfectly with his coaching duties. After 11 seasons as Three Rivers’ JV boys coach, he spent the last two as a varsity assistant at Portage Northern. His immediate goal is to renew enthusiasm within the program.
"My experience with Three Rivers basketball as a player was a very good one. I want to build the culture to the point where people want to be here, the effort isn't questioned and (we) have kids who enjoy the game," Bosma said. "I've had a lot of good mentors in this game. Now that I'm a head coach, I want our players to be able to step onto the court and play freely. Yelling after every mistake they make isn't going to teach them anything. They are going to make mistakes in life, and they have to understand it’s ok to mess up and learn from those mistakes.”
Bosma's additional goals this season are simple ones.
"I want our kids to make it known that we have competed hard in every game with a no-quit attitude. It's a coach’s dream to win every game, but I want to make sure these kids are becoming better people as well as basketball players," Bosma said.
Long-range goals include increasing interest among students to try out for the team. He and his staff have organized the Three Rivers NextGen Boys' Basketball Program for students in kindergarten through eighth grade that will begin in January and focus on building skills and nurturing players who may fill the ranks down the road.
Bosma's coaching philosophy includes being tough on his players while showing that he truly cares about their well-being.
"As a coach I'm going to be hard on you, but these guys know that it’s out of love and concern for them,” he said. “They understand that anything I say to them is meant truthfully, and it comes from the heart. I want them to know they can come and talk to me. I want them to return 10-12 years later and notice the same type of feeling in this program. All of my coaches are either former teammates of mine or guys who played for me.”
Tirrell Hausmanis, a former hoops star at Three Rivers, serves as Bosma's varsity assistant. Brenden Brown is the Wildcats' junior varsity mentor, and alumnus Thomas O'Dell is the freshman coach.
"Having Three Rivers alumni on our coaching staff teaches these kids how important basketball is to our community," Bosma said.
Offensively, Bosma expects the Wildcats to be able to stay in space and use their long wing players and better shooters to their advantage. Among the top returners are junior point guard Brayden Carpenter, 6-foot-6 senior forward Zander Barth (who is committed to Central Michigan for football), and senior forward Carter Langston.
Carpenter averaged 13 points per game as a sophomore, as Three Rivers finished 7-15.
"You can tell there's a different attitude under the new coaching staff. There are lot of guys now who want to put in the extra time and energy to get better,” Carpenter said. “Our communication on the court has improved, and Coach Bosma's system allows us to play freely without worrying about the consequences of making a mistake.”
Three Rivers looks to be more adaptable at the defensive end.
"Defensively I want to change things up all the time. We don't want to just sit back in one zone or play man-to-man, but rather press whenever we can,” Bosma said. “We have a group that has improved its basketball IQ, which allows us to do so much more as coaches. We have good team camaraderie and kids who are going to play for each other. These guys are more excited about getting the win rather than what shows up in the box score.”
Bosma has seven seniors on his roster, but Three Rivers still is a fairly young team in terms of experience.
"We have long and athletic kids and guys who could be pretty good once they build their confidence level. We have great guards and kids who like to defend. Defense has become somewhat of a lost art in high school basketball. We have the tools though to be a successful basketball team," Bosma said.
Morrison, a 2003 Three Rivers graduate who played football, basketball and baseball for the Wildcats, has taken the reins of the girls program. After high school, Morrison attended Ferris State University where he graduated with a psychology degree as well. He is employed as a probation officer for the state.
Morrison has extensive experience coaching basketball. He started out coaching travel basketball in Paw Paw while also coaching high school teams at Kalamazoo Loy Norrix, Vicksburg and Three Rivers, including the last five years as the JV boys coach under Burg. He also served as an assistant men's coach at Glen Oaks Community College under Mike Elliott.
"Working under Mike taught me so much more about basketball and has made me an even better coach. That time was very beneficial," Morrison said.
Morrison's immediate goal is to provide stability in the girls program.
"These girls have had several coaches in the last few years. I want to provide some stability and help the program grow from the lower levels,” he said. “Obviously you want to win championships, but right now we have to start with attainable goals like finishing over .500, which we haven't done in a while.”
Other goals that Morrison feels are within Three Rivers’ grasp are finishing in the top half of the Wolverine Conference and competing for a District title. The Wildcats were 8-14 last season and tied for sixth in the league.
His philosophy centers around pace and space.
"I want to get up and down the floor and defend. We want to execute an offense in the halfcourt, but also get up and down the floor and get some fastbreaks when we can. We spent the first couple weeks of practice working on executing things the right way," Morrison said.
Senior guard Dani Glass, a second-team all-Wolverine Conference pick last season, returns for her fourth varsity season. Glass, who averaged 12 points per game as a junior, has committed to play at Kalamazoo Valley Community College.
"Dani makes us go and is our catalyst for everything we do offensively. We expect more from her this season as she gets ready for the next level," Morrison said.
Sophomore post player Braylee Burg will be another key component for the Wildcats, along with senior defensive specialist Jersey Roehrs.
"I feel I help my team most with my ability to box out and create a lane for my guards along with providing rebounding. I want to work on finishing stronger at the rim this year,” Burg said. “Our coaching staff has us doing fun drills that are getting us ready for the season. We want to get the ball down the floor more effectively and set up our offense."
Morrison is most excited about his team's work ethic.
"We are very excited about this team's potential and are really leaning heavily on our seniors to give us a big great burst of energy and bring everyone else along,” Morrison said. “People are going to see a very well-disciplined group that works hard and together as a team. We are working extremely hard on our communication and shooting as well."
Parker Ellifritz, who ranks among Three Rivers’ all-time leading scorers, serves as Morrison's varsity assistant. Olivia Hancock, whose played on the 2016 Class B championship team at Marshall during her prep days, fills the role of junior varsity coach with Payge Ellifritz, Parker's sister, serving as her assistant.
Scott Hassinger is a contributing sportswriter for Leader Publications and previously served as the sports editor for the Three Rivers Commercial-News from 1994-2022. He can be reached at [email protected] with story ideas for Berrien, Cass, St. Joseph and Branch counties.
PHOTOS (Top) Above, the Three Rivers boys basketball coaching staff, from left to right: junior varsity coach Brenden Brown, head varsity coach Drew Bosma, varsity assistant Tirrell Hausmanis and freshman coach Thomas O'Dell. Below, the girls basketball coaching staff, also from left to right: varsity assistant Parker Ellifritz, head varsity coach Michael Morrison and junior varsity coach Olivia Hancock. (Middle) Junior point guard Brayden Carpenter (0) returns for his second varsity season at Three Rivers. (Below) Senior Braylee Burg (52) returns for her second varsity season for Three Rivers. (Photos by Scott Hassinger.)
Tri-Unity Avenges Season-Opening Loss, Earns Retiring Coach Another Finals Win
By
Jeff Bleiler
Special for MHSAA.com
March 15, 2025
EAST LANSING — The Wyoming Tri-unity Christian High School boys basketball team was not about to end its season the way it started – with a loss to Fowler.
The Defenders also were not going to let legendary coach Mark Keeler ride off into the sunset after a 38-year career without another Division 4 championship.
On the strength of suffocating defense and two double-digit scoring runs, along with frigid Fowler shooting during the first half, Tri-unity defeated the Eagles 49-32 on Saturday at the Breslin Center to claim its second-straight title and third over the last four years.
Keeler, who announced his retirement earlier this season, departs with his seventh MHSAA Finals championship. Fowler was making its first appearance in the championship since 2002 – when the Eagles also lost to Tri-Unity.
“This is not going to be a good time for me because I’m pretty emotional,” Keeler said. “I’m so stinking proud of them. Was that good defense? I think that was good defense. We played a great team. I thought we didn’t quit.”
Keaton Blanker led Tri-unity (27-2) with 12 points, followed by Noah Silverton with 11, all in the first half.
“Our biggest emphasis was playing 32 minutes,” Blanker said. “We don’t stop fighting until that final buzzer, and we did that. I’m just so happy for all us players.”
Tri-unity graduated eight seniors from last year’s championship team, with only Blanker and Joey Mellon seeing significant playing time, so another Division 4 title wasn’t necessarily a sure thing, especially after the loss to Fowler on opening night at home.
“I don’t think a lot of people thought that we could do this,” Blanker said. “We just fought. Every day at practice was a straight grind.”
Tri-unity’s defense was smothering all season – holding teams to an average of 39 points per game, the lowest of Keeler’s tenure – and it was downright sterling Saturday.
The first Fowler basket was a 3-pointer by Jacob Halfmann more than five minutes into the contest after Tri-unity scored the game’s first 11 points. That was quickly followed by another 3-pointer by Aaron Simon, but that was all the Eagles could muster as Tri-unity led 11-6 after the first quarter.
Six quick points from Tri-unity – aided by Fowler turnovers – pushed the lead back to 11 less than two minutes into the second quarter. At that point, Fowler had three times as many turnovers (six) as field goals (two).
The lead stretched to 16 halfway through the second quarter, prompting a third Fowler timeout.
A Jacob Halfmann 3-pointer at the 3:15 mark ended another lengthy Fowler scoring drought – and a 13-0 Defenders run – and made the score 24-9. He finished with a team-high 11 points.
The Eagles (25-4) struggled in the first half to find an answer for Silverton, who eclipsed double figures in points before they did.
“Today we just started a little slow. It took a little bit for us to settle in,” an emotional Fowler coach Kam Riley said. “We kept talking about, we got to settle in and be ourselves, and I thought we did that as the game progressed. Against a good team like Tri-unity, you dig a hole, it’s going to be tough to get out of it.”
An Alex Halfmann layup with 2:05 to play in the first half was the first Fowler field goal inside the 3-point arc. Despite a solid finish to the half by Fowler, the Defenders carried a 28-16 lead into the break.
The Eagles cut the lead to seven late in the third quarter as Tri-unity suddenly appeared mortal.
“They came back at us at the start of the second half, and we knew they would,” Keeler said. “I just thought my guys played great defense. I was more excited about our defense.”
A Clayton Rowlader 3-pointer pushed the lead back to double figures. Fowler pulled within 39-30 with 3:48 to play before Tri-unity closed the game with a 10-2 run boosted by two more 3-pointers by Rowlader. The Defenders finished 4-of-10 from long range after making only one of 23 attempts combined during Regional Final and Quarterfinal victories.
Keeler said this championship was different than the others because it’s his last, and that despite the loss of so many upperclassmen from last year’s team, he had a feeling this team could win it all.
“The competitive part of me, I wanted to win and I knew we could because I’ve watched these guys mature,” Keeler said. “I love defense. It’s the old adage, if you can do offense, you’ll win games, but if you play good defense, you’ll win state championships.”
Keeler finished his career with a 721-218 varsity coaching record, his wins ranking third in MHSAA boys basketball history.
PHOTOS (Top) Tri-unity Christian’s Keaton Blanker (4) exits the game in celebration during his team’s Division 4 Final win Saturday at Breslin Center. (Middle) The Defenders’ Cody Osbun elevates above three Fowler players to put up a shot. (Below) Fowler’s Aaron Simon (30) makes a move into the lane. (Photos by Adam Sheehan/Hockey Weekly Action Photos.)