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.

Bay & ThumbEven 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.

Montrose's Addyson Stiverson competes in the shot put at last season’s LPD3 Finals.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 CostanzoPaul 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.)

Leighton Latest of Family Hurdling Stars

By Wes Morgan
Special for MHSAA.com

June 7, 2016

Mendon’s Mary Leighton has been gliding over hurdles for the Hornets for three years now, dominating most Berrien-Cass-St. Joseph Conference races, as well as an assortment of invitationals.

That’s nothing new for the Leighton clan, which boasts a lineage of talented hurdlers. But there’s something about Mary that’s different.

No one in Division 4 in the Lower Peninsula has gone faster than her in the 100-meter hurdles. Not after Saturday. The junior not only claimed a school-record time of 14.93 seconds en route to an MHSAA championship at Grand Rapids Houseman Field, she set an LP Division 4 meet record, beating Michelle Davis’ time of 15.05 for Reading in 2014.

Older sister Grace, who finished fourth at the LP Division 4 Finals in the 100s and sixth in the 300s as a senior in 2014, owns the Mendon 300 hurdles record, which Mary is closing in on. Older sister Caitlin previously had the 100 hurdles school record … until Saturday. Their mother, Sharon (maiden name Beebe), once had the records in the 100 hurdles at Mendon.

Mary Leighton was half a second away from Caitlin’s record midway through this spring, and she was confident she’d pass her sibling.

“I’m looking forward to beating it. I don’t think there’s going to be a party,” she said, mostly in jest, of her sisters not wanting to give up their record-holding status.

“People say it’s in the blood, but I think I was around it so much, it just kind of rubbed off on me. I have them to look up to, so it’s much easier for me. My form has definitely gotten a lot better. I can three-step now instead of four-step. The less steps you have, the faster you can get over the hurdle and the faster you can finish the race.”

Leighton, who was Finals runner-up in 2015, set her sites on a 15-flat time in the 100s by the time this year’s meet rolled around. She surprised herself by going even faster Saturday.

She beat the field by nearly a second. It was a flawless effort, which included a great start and a complete attack of the middle stretch of hurdles.

As soon as Leighton crossed the finish line, she covered her face with her hands in disbelief of the runaway victory and the time on the scoreboard.

“It hasn't really hit me yet on how I did,” a stunned Leighton said hours after the performance. “I just tried to focus on getting through semis so I actually had a shot.”

Her qualifying time was 15.54, which was a good sign of things to come.

“I was so nervous but I felt better and better the more I ran,” she said. “I didn't even know my time until after the 800 relay. I figured I broke (a record) because all the Mendon parents were just so happy, but I never could have imagined I broke the state record as well. I focused on how I could improve all season and my work paid off. I didn't want to take second again. My sister didn't care I broke her record; she was too happy. I am very happy with my performance and can't wait to see how much I can improve next year.”

Leighton added another all-state finish when she joined Emma Eberstein, Jenna Gales and Kaley Smith for a runner-up effort in the 800 relay (1:47.82), finishing just over a second behind champion Fowler. Her third top-eight finish was a fourth-place run of 47.87 in the 300 hurdles.

That wasn’t a school record, so Leighton has something to shoot for next spring. 

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) Mary Leighton covers her face in joy and surprise after a lengthy win in the 100-meter hurdles Saturday at Houseman Field. (Middle) Leighton prepares to clear another hurdle flanked by a pair of opponents. (Photos by Brett Beier.)