Entertainment Sports Basketball Jayson Tatum Shares Throwback Photo with Childhood Classmate Matthew Tkachuk to Celebrate Their NBA and NHL Titles The former high school classmates both won their respective league championships this month while cheering each other on throughout the playoffs By Sean Neumann Sean Neumann Sean Neumann is a reporter at PEOPLE. He has been working at PEOPLE since 2019. His work has previously appeared in Rolling Stone, The New York Times, ESPN, and more. People Editorial Guidelines Published on June 25, 2024 03:48PM EDT Comments Close From Left: Jayson Tatum; and Matthew Tkachuk. Photo: Jim Poorten/NBAE via Getty Images; Dave Sandford/NHLI via Getty Images It’s the kind of stuff they might have dreamt about in gym class. Matthew Tkachuk and the Florida Panthers capped off their first Stanley Cup victory on Monday, June 24 by warding off the Edmonton Oilers 2-1. The win solidified a childhood dream for the team’s star player and his high school classmate, Jayson Tatum, who also won his first NBA Championship with the Boston Celtics one week prior. “They did it!” ESPN captioned an Instagram post, which included a throwback video of Tatum and Tkachuk, now both 26, goofing around in gym class at Chaminade College Preparatory School in St. Louis and giving fake sports interviews. The PEOPLE Puzzler crossword is here! How quickly can you solve it? Play now! Tatum shared the post on his Instagram Stories on Tuesday morning along with another throwback photo of him and Tkachuk sitting next to each other on the bus, celebrating the fact the two childhood friends can both call themselves champions after a storybook week for the St. Louis natives. “I’m a big Matthew fan,” Tatum said earlier this month at a press conference in Dallas before he and the Celtics clinched the NBA Championship. “I actually watched him win [Monday]. … I’m extremely happy for him and his family and hopefully they win it all.” Childhood Buddies Jayson Tatum and Matthew Tkachuk Are Now a Game Away from NBA and NHL Championships Jayson Tatum celebrates with his son in 2024. Brian Babineau/NBAE via Getty Tkachuk told reporters at the Stanley Cup Final Media Day earlier this month that he was watching Tatum’s games throughout the NBA Playoffs as well. “Yeah, it’s actually really cool when you think about it," he said during the Stanley Cup Final Media Day, according to NHL.com. "Everyone from St. Louis, whether they were going to watch or not, with having both of us in, I’d say there’s a lot of people, especially the kids we grew up with and families and people who know us, they’re pulling for both teams. It’s super cool to have that support back home for not only myself, but for the Celtics as well." Tkachuk added, “It would be unreal for Chaminade and all of St. Louis if we can both win it.” Well, mission accomplished. Matthew Tkachuk on the Stanley Cup and Becoming the Face of the NHL: ‘I’m Just Being Myself’ (Exclusive) Matthew Tkachuk celebrating in 2023. Eliot J. Schechter/NHLI/Getty The NHL star, who told PEOPLE last year he’s attracted so many fans in South Florida by “just being myself,” also celebrated Monday night’s Stanley Cup win with his family on the ice. Matthew’s father, Keith Tkachuk, a 500-goal scorer throughout his 18-year NHL career, broke down in tears after the game ended and his son jumped in celebration with his Panthers teammates, according to NHL.com. Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. Meanwhile, his mom, Chantel, and his brother, current Ottawa Senators star Brady Tkachuk, were all smiles as the Tkachuk family shared hugs in the stands before heading down to ice level to celebrate with Matthew and the rest of the Panthers players’ families, the outlet reported. “This is for them,” Tkachuk told NHL.com after the game. “Finally, the Tkachuk name will be on the Cup. This is for them.”