Byron Brother & Sister Teaming Up Once More
By
Paul Costanzo
Special for MHSAA.com
October 23, 2018
When it was announced Sunday night that Byron was included in the Division 6 playoff bracket, it wasn’t a surprise for the 5-4 Eagles – but it did provide new opportunities.
An opportunity to play another game. An opportunity to avenge a Week 1 defeat against Flint Hamady. An opportunity to stay together for at least one more week as a team.
In the Marvin household, it provided one other unique opportunity: a chance for senior TJ and his younger sister Sarah, a sophomore, to be teammates on the Eagles’ offensive and defensive lines. Sarah Marvin was a captain on the Eagles’ junior varsity team this year, and is among a group of players moving up to the varsity for the postseason.
“That’s awesome to be able to play football with your sister,” TJ Marvin said. “But to play the same positions and not have to go easy, it’s good, because I can still get a good look.”
It’s the second straight year the Marvins have had this opportunity, and in 2017 they actually were able to line up next to each other late in the Eagles’ loss to Ithaca.
When it comes to practice, being on the same field is nothing new as Byron’s varsity and JV teams often practice together. That means brother and sister – who both play defensive end and offensive tackle -- not only share a field, but also get to square off throughout the season.
“It’s fun,” TJ Marvin said. “It’s cool to be up against your sibling. Caliber of player wise, she lines up just like all the other guys, so I’m still getting a good look. It’s not much different.”
The Marvins get to spend plenty of time together athletically, as both are also throwers on the track & field team, along with Sarah’s twin sister, Becky. Sarah and Becky also get to play basketball for their mother, Theresa, who is the Byron girls varsity basketball coach.
“Everyone in my family knows about throwing,” Sarah said. “All of the sports – you can go home and talk about it, and everyone in your family understands.”
Football is also a family thing, but it’s something special TJ and Sarah share. They started playing while she was in first grade and he was in third, and often times found themselves not only as teammates, but also lined up next to each other on the offensive line.
Starting in the male-dominated sport was something Sarah didn’t think twice about.
“I don’t know if it was something that so much drew me to it. It was just that all of my boy cousins always played,” Sarah Marvin said. “I have (two younger cousins, two younger brothers), an older brother and an older cousin, and we would always rough house.”
Theresa Marvin said her daughter has always loved the game -- whether it be watching or playing -- and became a student of it. TJ agreed.
“Sometimes I’ll give her tips and stuff, but she is very athletically smart,” TJ Marvin said. “She knows the game, watches a lot of football and she’s very good at big picture plays and seeing what’s going on. Any sport, really, but especially football where there is so much going on, she really analyzes the game.”
While they started playing at the same time, TJ does have plenty of experience he can pass onto his younger sister. Injuries kept him off the field for the majority of his freshman and sophomore seasons, but the 6-foot-3, 235-pound two-way starter was an all-conference selection as a junior. He also is a varsity captain this season.
Sarah Marvin already has established herself as an all-state athlete, finishing third this spring at the Lower Peninsula Division 3 track & field championships in the discus and shot put. She was also an honorable mention all-state selection in basketball during her freshman year.
Throwing appears to be her future as an athlete, and continuing to play football is something they’re taking year by year.
“All through my freshman year I was dead set on it, that I’m going to play all four years,” Sarah Marvin said. “I think that’s changed a little bit. I had a kind of close call where a kid went to make a tackle and I was behind our running back, and he fell right into my knee. So that’s the main thing, is not getting hurt.”
Worrying about getting injured, however, has nothing to do with Sarah’s gender.
“Sometimes I worry about it, but I don’t worry about her anymore than I would other guys on the field,” TJ Marvin said. “I worry about it a little bit with her coming up on varsity where there are much bigger players and it’s a little more intense, but I know what she can do physicality wise and the kind of athlete she is. I worry about her getting hurt, but I worry about every one of my teammates getting hurt.”
Sarah is simply a member of the team, and she says that’s something that resonates through the program.
“Within my grade level and even the grade older, since I’ve played since the first grade, I think they’re just used to it -- we’re definitely just regular teammates,” she said. “They don’t treat me any different than the other kids; they’re just out there to play football. I’d probably be annoyed if they didn’t hit me as hard as they hit everyone else.”
Despite that, the Marvin siblings realize their situation is unique, and they feel fortunate to be able to experience playing together for at least one more week.
“(Getting on the field together) would be a really cool thing to do,” Sarah Marvin said. “Especially in his senior year.”
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) TJ, left, and Sarah Marvin take the field for Byron’s varsity and junior varsity teams, respectively, this season. (Middle) TJ and Sarah first teamed up nine years ago when TJ was in 3rd grade and Sarah in 1st. (Photos courtesy of the Marvin family.)
Dock Putting Dad's Coaching Lessons to Work as Middleville TK Continues Climb
By
Steve Vedder
Special for MHSAA.com
November 3, 2025
MIDDLEVILLE – Denny Dock can't pinpoint the exact moment he thought his football-loving son would follow him into coaching, but the signs were there all along.
For starters, there were the countless hours spent tossing a football around the backyard. Or when his young son, Jeff – not even old enough for middle school at the time – eagerly joined other Stevensville Lakeshore coaches watching film on weekends.
Maybe it was all those Friday nights spent trekking along the sideline as a ball boy for Lancers teams. Another clue might have been the Saturday afternoons the two spent together watching college football, or taking in the NFL on Sundays.
When Jeff got older, it may have been how he readily absorbed tips that helped him become a better quarterback in high school and then at Grand Valley State. It could have even been an early, uncanny ability to grasp the importance of fundamentals.
Put it all together, and it seemed inevitable coaching football loomed in Jeff Dock's future.
"That's very fair to say," said Denny Dock, who is 19th on the state's list of all-time winningest football coaches while also the winningest high school softball coach in the country. "The younger years in football were really positive for Jeff, and that doesn't happen all the time. There are negative things that can happen."
While there might have been multiple signs the younger Dock would one day join the coaching ranks, he admits it was far from a done deal. There were thoughts of becoming a biology teacher, a pastor or maybe even an orthopedic surgeon.
But coaching? Even with his father as a classic example of the positive impact a good coach could spread, Dock said it took years for him to eventually land in coaching.
"It dawned on me that there were a lot of all three of those things in being a coach," he said. "Growing up in sports is what I knew, and I ended up developing a passion for it."
That passion is actually the highest it's been in years as his Middleville Thornapple Kellogg football team this past weekend improved to 7-3, continuing the program's first winning season since 2020 and the best fall since the Trojans went 7-3 in 2018. The Trojans defeated Hastings 28-20 in a Division 2 playoff opener, and a win this Friday at Lowell would give Middleville its first District championship since 2001.
Denny Dock coached football at Hartford from 1981-83, Dowagiac from 1984-87, and then Lakeshore from 1988-2013, returning to lead the Lancers for one more season in 2020 and all together totaling a 270-79 career record, 15 league titles and five runner-up MHSAA Finals finishes.
He has kept his hand in football in aiding his son's Trojans program. He's at all the games to add support, critique, advice, strategy, tips on how practices can best be organized and long talks discussing how continual improvement can be furthered.
It's a two-way street as an old football coach who never had a losing season, and is a member of the Michigan High School Football Coaches Association Hall of Fame, can remain invested in the game while his son benefits from three decades worth of experience.
Jeff Dock said his father's real value is his ability to spot from the stands the little things that less experienced coaches may miss.
"Play calling, how players are used, maybe a little bit about strategy," Dock said.
After playing for his father, Dock said there's no doubt he's transferred the best of what he learned into his own coaching. The older Dock was not only a highly successful football coach, he's compiled a 1,319-345-2 record in softball with eight Finals titles.
Whether it's about football or the philosophy Dock stresses in his softball program, the advice accepted from his father – who still attends softball clinics for tips on improving the Lakeshore program – is virtually across the board. It begins, however, with how a coach should treat his players.
"I was a manager growing up, and I saw his intensity and a love of his players," Dock said. "He never pushed me in any direction, but he told me about education. He always let me figure it out. One of the coolest things my parents did in raising me was to allow me to figure things out."
As far as the Xs and Os of coaching, Dock said his father prizes an organized practice. In fact, it could even be argued that both Docks enjoy a spirited and productive practice session over the microscope of Friday Night Lights.
"He never had a losing season, and it was ingrained in us just to go back to work and that that work never stops," he said. "He loves practices and being organized. Rule No. 1 with him was to make sure the players are prepared, and that you have to communicate with them. Dad would never belittle us or cuss us out.
"I saw the work he put in, how he'd wake up every Saturday thinking about the game. I saw the nitty gritty of coaching and how it was going to take work."
It was that seemingly endless work, in fact, that Denny Dock made sure his young son understood. Denny had no illusions over the pitfalls of coaching, and the pros and the cons. But before he could teach that to his son the coach, he made sure his son the quarterback understood how athletics worked.
There were challenges as a player and now for his son as a coach.
"He was always a quarterback because I think he liked the ball in his hands," Denny Dock said. "I think he liked the leadership part of the game, understanding the team part, and knowing what he had to do. That always challenged him."
While the challenge of playing is long gone for the younger Dock, the next challenge is building a program which is annually competitive. To do that, Jeff Dock said he accepts what his father knew 30 years ago.
"I'm willing to learn anything from anyone at any time," he said. "I know my dad has always thought about what he can do to become a little better every year. I'm always looking for ways to communicate and do things better. It can always be done better, but how can you get there? How can we do the little things better. That's what I learned."
PHOTOS (Top) Jeff Dock, left, and son Micah – Middleville Thornapple Kellogg’s quarterback this season – stand for a photo at their home field. (Middle) Denny Dock, far left, coaches a base runner during Stevensville Lakeshore’s 2022 Semifinal win. (Top photo by Steve Vedder.)