Owner of State's All-Time Farthest Shot Put Aiming for National Record, Olympics
By
Paul Costanzo
Special for MHSAA.com
March 25, 2026
From the first time Montrose's Addyson Stiverson picked up the shot put at a sixth-grade track & field practice, it was clear there was something there.
Even if she wasn’t quite clear on the name.
“I ran at the first couple practices, and was like, this wasn’t for me,” she said. “They said, ‘You’re strong, try the heavy ball thing.’ I honestly never threw it like a baseball. It wasn’t impeccable, but I kind of knew the basics. I definitely had some sore elbows and shoulders.”
Five years later, Stiverson sits atop the record books as she’s thrown that heavy ball thing farther than any female in Michigan high school history.
Her personal best of 53 feet, 7½ inches, which she threw Dec. 13 at an indoor meet at Grand Valley State University, is nearly two feet farther than the previous record of 51-11 held by Byron great Sarah Marvin, according to MichTrack.org, which tracks records from all meets. (The MHSAA record book is for Finals meets only.)
And as she enters her junior outdoor season having already won the shot put twice and discus once at the Lower Peninsula Division 3 Track & Field Finals, Stiverson’s goals go well beyond the state’s borders.
“(Competing in the Olympics) is the goal,” Stiverson said. “Throwing in 2028 would be nice, but I think a good goal is to be a good contender in (2032). Even going to trials in 2028 and getting close to making the team would be a big win for me.”
It’s a huge goal, but not at all outlandish for Stiverson, who is already fielding scholarship offers from between 20 and 30 major Division I programs and is part of the Nike Elite Team, which includes 40 of the country’s top high school track & field athletes.
She also trains with Dane Miller at Throws University in Reading, Pa. Miller has trained two national champions and 12 World Team members.
“When he texted me like a month or two after we went out there and he was like, ‘I want to coach you,’ I was like, holy crap. I was kind of fan-girling for a moment,” Stiverson said. “He’s like one of the only reasons I throw as far as I do. When he first started coaching me, he was like, you’re not doing this anymore, we’re doing this. He cut out all the bad stuff.”
Stiverson’s 53-7½ would rank seventh all-time on the National Federation of State High School Associations list. The listed record there is 57-1¼, by Alyssa Wilson of New Jersey. But Wilson threw 58-1 during the summer after her senior year, and that’s the record Stiverson is chasing.
Plus a little more.
“She always has that goal in the back of her mind of breaking that 58-1,” said Adam Stiverson, Addyson’s father and Montrose’s girls track coach. “She kind of has a little future goal that no one really talks about it: Could a high school female thrower ever hit 60 feet?
“She wants to compete in college no matter what, and she wants to get better. There’s always room for improvement. If she can fix some things, get a little bigger, a little stronger, 60 feet could be possible. But let’s get 55 feet out of the way, 56 feet out of the way, 57 feet out of the way. If we can get to 57, then we can talk about that 60, because then we’d know that 58-1 is coming.”
While chasing down national goals, Stiverson has been dominating locally.
She’s never been beaten in the shot put during the high school season, and she’s never finished lower than third in the discus, despite it being much less of a focus for her, as she doesn’t want it to affect her form in the shot.
“I’m not going to lie, I don’t touch a disc that much,” Stiverson said. “I give it maybe 75-25, maybe 70-30 during the season. I feel like if I give it too much attention, it could mess up my shot.”
While throwing is her main focus now, Stiverson did play varsity basketball as a freshman and sophomore at Montrose. She also played football all the way through freshman year.
At 5-foot-9, her all-around athletic ability and explosiveness are a great base for her throwing ability, and while she hasn’t shown it off in a while, she can run, too.
On the day she set the Montrose school record for the shot put as a freshman, she also won the 100 meters at a Mid-Michigan Activities Conference quad meet.
“That was for team points,” Stiverson said with a laugh. “Our coach said, ‘One of the girls didn’t show up, we need you to run.’ And I had my spikes with me, so I did.”
Stiverson was the Division 3 Finals champion in the shot put both of the past two years, and won the discus in 2025 as well. She was runner-up in the discus as a freshman.
There are still two full seasons to go, but she’s on pace to become the first female thrower in the Lower Peninsula to win four Finals titles in the shot put.
“I think that was my biggest goal when I came into high school; I wanted to be a four-time shot put state champ,” she said. “When it does happen, that would be one of the coolest things. That was a dream.”
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 Montrose's Addyson Stiverson competes in the shot put at last season’s LPD3 Finals. (Photos by Mary Wilson/RunMichigan.com.)
Marvin Seeking Record-Setting End to Marvelous Byron Career
By
Tim Robinson
Special for MHSAA.com
June 1, 2021
BYRON — In a bare-bones weight room that appears more like a garage to passers-by, Sarah Marvin is working to finish her quest to rewrite the record books in the shot put for girls track & field.
Not just in the Lower Peninsula’s Division 3, in which she won Finals titles in both the shot put and discus in 2019, but for all divisions.
Marvin, who has a track scholarship to the University of Michigan, has had 11 throws this season beyond the LPD3 Finals record of 46 feet, 9 inches, set by Becky Breish of Edwardsburg in 2001.
She twice has surpassed the all-Finals record of 49 feet, 11.75 inches set by Division 1’s Corinne Jemison of East Kentwood in 2018 – the first time during last summer’s National Scholastic Athletic Foundation’s virtual meet, and then again May 26 at a meet in Comstock Park with a throw of 50 feet, 9 inches.
“Throwing is so technical,” she said, “and you have those days where you’re just clicking and firing on all cylinders. I think I’ll be close to being there soon in these few meets I have left.”
It starts with the Division 3 Finals on Saturday at Jenison.
Marvin and her fraternal twin sister, Becky (a strong thrower in her own right) are familiar with the Jenison layout, which was the site of the 2019 Division 3 Finals.
“We’ll get there Friday,” Marvin said. “We like to go to the throwing rings and feel it out, get a good dinner, then stay at a hotel so we don’t have to ride for an hour and a half in a car (before the competition).”
Throwing is a sport that comes naturally to the Marvins, both for the twins, their sister Jessica and their mother, Theresa, who competed at Michigan after winning two state titles in the discus for Byron during the 1990s.
“Their older sister (Jessica) and brother T.J.) did AAU, which isn’t as big here, but is in the Detroit area,” Theresa Marvin said. “We started a club and had kids that weren’t ours on the team as well. It was a lot of fun for us. Other families were doing T-ball and soccer, and we were doing track.”
The Marvins installed a pair of throwing rings on their property about a decade ago, and the twins picked it up from there. The family took its vacations at AAU national meets, driving all over the country.
Both of the Marvin twins (Sarah is two minutes older, Becky an inch taller) played multiple sports at Byron. Becky also ran cross country and played basketball and wrestled, while Sarah was a starting offensive lineman on the Byron JV football team and did some wrestling in addition to playing basketball, where she was a three-time Owosso Argus-Press Player of the Year.
After her junior year, Sarah gave up football and wrestling.
“I had switched my (shot put) technique to rotational, and I needed more time, more months that I could devote to throwing,” she said. “I tried to train and throw during football season, but I was just too physically tired to do it the way you need to do it. I decided to put my effort and time into throwing.”
As she mentioned, Marvin had switched her throwing from a glide technique, where one effectively pushes the shot in the throw, to the rotational, where the shot comes out like it is slung.
“I’m very comfortable with it now,” she said. “But I’m looking forward to getting more comfortable with it. It’s so technique-heavy. You have these guys who have been doing it for more than a decade, and I’ve been doing it for two years. The more you do it, the more you develop the muscle memory.”
Certainly the results have been there. All of Marvin’s throws this season have been well beyond the 44-11.5 she threw to win at the 2019 Finals.
“It’s helped me make a big improvement,” she said. “But we knew that it would.”
But Sarah Marvin also has a key element in her makeup that has spurred her success.
Asked what she thinks makes her sister stand out, Becky Marvin said, “her work ethic, for sure. She’s always working harder than everyone else. She’ll go out and lift without me sometimes. She has talent, for sure, but her drive makes her stand out.”
During last year’s pandemic, the Marvin sisters were without a place to work out after Byron High School closed.
“We got online and on Facebook Marketplace and put the word out,” Theresa Marvin said. “People gave us stuff, and we made an at-home weight room in our barn.”
Their sister Jessica, who competes at Northwood University, came home along with her boyfriend, who like Jessica is a thrower at Northwood. They all worked out.
“It was a houseful,” said Theresa, a mother of six.
Theresa Marvin realized early on that her twins would need more specialized coaching than what she could provide, and for the last couple of years they have worked with Dane Miller, a private coach based in Fleetwood, Pa.
“I do still coach them at meets, and I try to facilitate what Dane’s trying to do,” said Marvin, who also coached her daughters on the Byron varsity girls basketball team the last two years.
Speaking of basketball, the extension of the season into late March cut into the Marvins’ training time for track.
“Her strength levels go down in basketball from all the running,” Theresa Marvin said of Sarah. “It took her a good 4-6 weeks to get back to speed, and I don’t think she’s there yet. Last year, she didn’t peak until mid-July.”
The Marvin sisters, whom Byron girls track coach Byron Schartzer calls “The Wonder Twins,” feed off each other in competition.
“Just to have another person to hold you accountable to train with definitely helps,” Sarah said.
And while they’re serious about their sport, they also keep things light-hearted.
“If I throw big, she throws big, sometimes,” Becky said. “I made fun of her at the Comstock Park meet; I fouled on my first throw and made the second.
“Then she fouled on her first throw and made the second, and I’m like, ‘OK, you can just copy me, then,’” she added, chuckling. “But if one of us hits a big throw, we try to drive off that.”
While there are other amateur meets later this month, the Marvins have their attention set on Saturday’s Finals.
In the shot put, Sarah Marvin has the top throw this season entering the week, but Becky Marvin is in the top 10, seventh in a pack where spots 3-8 are within 21 inches.
Sarah also is ranked No. 1 in the discus, while Becky is ranked sixth.
“They’re both having great seasons,” Theresa Marvin said. “But you never know. You just can’t take anything for granted. We focus on being healthy, being ready to peak, and then being ready to go on that day.”
And then, before they know it, the twins will be separated. Sarah is going to Michigan to study movement science with an eye toward, perhaps, a medical career.
Becky is going to Tiffin University, where she plans to compete on the track team while pursuing a business degree.
“It’s like 2½ hours from Byron,” Becky said. “Ann Arbor’s on the way home, so if I’m driving by and she wants to come home, I’ll pick her up.”
It’s family, after all, that Sarah cherishes the most about her athletic career.
“I can’t imagine where I would have been in my sports, or my success in sports, without my family,” she said. “In basketball, it was my older sister playing. My three brothers are all wrestlers. I have huge family support and a huge extended family that comes to all my games. They’ve all grown up playing sports, and it’s just fun.”
PHOTOS: Byron senior Sarah Marvin shows her shot put form; she’s the reigning Division 3 champion in the event. (Middle) Sarah and twin sister Becky Marvin are workout partners and make up one of the top throwing pairs in the state again this spring. (Photos by Tim Robinson.)