Trenarys Trade Roles, Mendon Reigns On

October 8, 2015

By Wes Morgan
Special for Second Half

Volleyball found Bill Trenary early on. Actually, countless volleyballs did.

“I was getting hit in the head with volleyballs before I could walk,” the Mendon High School varsity coach, now in his second year at the helm, said. “There’s a very good story about me getting knocked out of a walker in this very gym. I started managing when I was in second grade. Ever since then I’ve been in the gym playing volleyball.”

His mother, Michigan High School Volleyball Coaches Association 2014 Hall of Fame inductee Kathy Trenary, spent more than three decades guiding prep squads, most notably a 19-year run at Mendon that netted 721 victories, 10 conference championships, 15 district titles, six regional crowns, trips to six MHSAA Semifinals and championship victories in 1998, 1999 and 2001.

Growing up around the game undoubtedly sparked Bill Trenary’s interest in the sport. Like most boys, however, he was just as engrossed in other athletic and leisurely pursuits. He enjoyed the outdoors, beating his mother on the squash court and obsessively studying opening chess moves — a competitive fire serving as the common thread.

One unique experience in particular was likely what set Bill Trenary up for a successful career in volleyball.

His parents put a premium on experiencing other cultures. His father, Robert Trenary, was a Fulbright scholar at the University of Botswana when Bill was in the eighth grade. That enabled the Trenary family to live abroad for a year. Bill Trenary ended up setting for his school’s varsity team, which played outdoors under the African sun.

Bill and younger brother Matt went on to play intramural volleyball at the University of Michigan.

“They tried to win the championship but could never do it because a lot of kids on the team just wanted to play,” Kathy Trenary said. “I’d go to Ann Arbor and watch them play. That was great.”

It was about that time when Kathy Trenary took over as head coach at Vicksburg. It was an opportunity for Bill Trenary to fire some high-velocity shots inside high school gyms like those he remembered zipping at him as a toddler.

“I was in my 50s at the time and I said, ‘I really need a hitting boy,” she recalled. “I said, ‘would you like to come and be a hitting boy?’ He really identified with how much he liked (volleyball). He played it all growing up, but he maybe never realized how much he liked it until he started to coach it.

“He just found it fascinating; he has always been a gamer.”

In the years since then, Bill Trenary learned from the best, leading to his takeover of the Mendon program in 2014. Kathy Trenary stayed on as his assistant coach and the continuity was evident with the Hornets’ run to the Class D semifinals in 2014, which ended in a 3-0 loss to Battle Creek St. Philip. The arrangement has been seamless for the Hornets, who are currently ranked No. 6 in the latest MIVCA Class D poll.

“When we decided to switch, part of the reason was her being kind to me, I guess,” Bill Trenary said. “She saw me getting better. It was time for me to kind of step into that role. I think I’m a little better game coach because I’m younger and I can push through long Saturday tournaments and make the quick decisions on the court.

“She is absolutely one of the best coaches I’ve ever seen — attention to detail and running practices. She’ll run most of the drills because, heck, she invented most of the drills. Not utilizing her in that role would just be stupid. Me taking that away from her would just cost us points. There’s no reason not to be doing that when we have someone of that caliber.”

A fan of Tom Tango’s book “Playing the Percentages in Baseball,” Bill Trenary strongly believes in analytics and that some statistical aspects of volleyball are often overlooked and undervalued.

As are role players, which there are more of this year than freak athletes. That’s often the case at a small school such as Mendon, where fundamentals help offset height disadvantages.

This year Mendon has a “huge arm” in junior hitter Megann Leighton, exceptional leadership from seniors Brandy DeLeeuw and Emma Eberstein, lockdown play from junior libero Kaley Smith and reliable and consistent setting from junior Cassie Plummer.

“That’s how other teams see us win, but the way we win is when Nancy Steinacker can come and serve a string in our weak rotation,” Bill Trenary pointed out.

The points are in the details.

“We don’t have the best athletes every year, but we have a deep knowledge of the game, which is fun,” he said. “I’ve just tried to build on that. I know we’re using more math, more stats, more film than we have. That’s just a next generation sort of thing, but we’re not trying to reinvent the wheel."

Wes Morgan has reported for the Kalamazoo Gazette, ESPN and ESPNChicago.com, 247Sports and Blue & Gold Illustrated over the last 12 years and is the publisher of JoeInsider.com. He can be reached at [email protected] with story ideas for Berrien, Cass, St. Joseph and Branch counties.

PHOTOS: (Top) Mendon coach Bill Trenary, far left, huddles with his team during a match this season. (Middle) Mendon assistant Kathy Trenary, left, remains in the program as her son's assistant. (Photos courtesy of Nicci Plummer.)

Country Day, Senior Star Hiemstra Cap Repeat Run in Dominating Fashion

By Paul Costanzo
Special for MHSAA.com

November 22, 2025

BATTLE CREEK – Elise Hiemstra’s final swing in a Detroit Country Day uniform was the perfect way to end her high school volleyball career.

The senior outside hitter took a well-placed set from sophomore Payton Woodruff, like she has so many times over the past two years, and spiked it through the Flat Rock defense onto the floor at Kellogg Arena.

Her 21st kill of the day closed out a 25-18, 25-19, 25-12 sweep for the Yellowjackets in the Division 2 championship match, and back-to-back Finals titles.

“I just really wanted Payton to get me the ball,” Hiemstra said. “I just really wanted to go out the best I possibly could.”

This weekend marked just the second time Country Day had even made the Semifinal, but the Yellowjackets (29-9) looked like seasoned veterans, clinically putting away Flat Rock in a dominant performance.

“Our goal today was just to kind of come in and take care of business,” Country Day coach Kim Lockhart said. “Go back to the basics, serve tough, pass the ball. Just go out there and do our thing, and I think that’s what we did. We handled ourselves well. I felt our nerves were settled right out the gate. We came in with confidence and a lot of communication.”

Flat Rock, meanwhile, felt the nerves and inexperience in this moment were a factor as the Rams (39-9) were making their first appearance at Kellogg Arena.

Elise Hiemstra (9) smashes a kill attempt at a Flat Rock block including Jaclynn Motyka (14).“I feel like the pressure, this was our first time even making it here, and I feel like we were just not used to that,” Flat Rock junior Sarah Giroux said.

Giroux’s assessment looked accurate, as Country Day’s athleticism and attacking movement seemed to catch Flat Rock flat-footed. 

Woodruff had 35 assists in the match, spreading them out to seven attackers.

“Especially going through semis and quarters, I think their offense was a little bit quicker,” Flat Rock coach Morgan Delhey said. “I would have liked to see a little bit more competition coming up to this so maybe we were a bit more prepared. But, they’re a good team and I have to give credit to them.”

While Woodruff was spreading the wealth, Hiemstra was her favorite target, and for good reason. On Saturday, Hiemstra became Country Day’s all-time leader in kills, both for a career and season. 

“When I look at Elise, she was a baby coming into all the camps I used to run when she was just so little and loving the sport,” Lockhart said. “Her sister was older than her, and she was kind of like, ‘I wanna be like my sister.’ She has just been here from the get-go, out of the gate, and has learned from some really great players along the way. Ever since she was a freshman, playing behind some big players. She’s really been a sponge. Going from playing back row, a (defensive specialist) when she was a freshman, to leading the team to back-to-back championships, there’s a lot to be said about her and her success at Country Day.”

While Country Day didn’t show any signs of stress Saturday, they did have to deal with the pressure of defending a title all season. It’s something they really embraced down the stretch.

“There was definitely a lot of pressure, but we took it and we used it to our advantage instead of letting it make us crumble,” Country Day senior Abby Pernick said. “I think that is really what pushed us through. We wanted it so much. That was the thing we talked about from Day 1, tryouts even. We came in, and we knew we wanted it.”

Demi McCoy led the Country Day back line with 14 digs Saturday, while Hiemstra added nine. Aliyah Potapenko had nine kills for the Yellowjackets, and Woodruff added four aces.

Giroux led the Flat Rock attack with 15 kills, adding nine digs defensively, while Zoe Ryan had 21 assists. 

“I wouldn’t rather do it with anybody else than this team,” Flat Rock senior Reagan Higdon said. “I wouldn’t rather win or lose with anybody else. Especially for this program, this community, no matter how we came out, I’m still glad that we’re here. We’ve done something that’s never been done before.”

Click for the full box score.

PHOTOS (Top) Detroit Country Day players celebrate their repeat championship Saturday at Kellogg Arena. (Middle) Elise Hiemstra (9) smashes a kill attempt at a Flat Rock block including Jaclynn Motyka (14).