He's 6-foot-9, 210 pounds, with a 7-foot arm-span, and wears a size 14 shoe.
"I definitely went through that awkward phase," Plymouth junior Mack Mercer said.
You can't teach size, but you still have to know how to use it. And Mercer knows how to use it.
"I've always been kind of clumsy," the forward said. "I mean, I still am, being that big, having that big of feet and everything."
If this is what clumsy looks like, we should all be so lucky. Mercer is one of the top 10 scorers in the area, averaging better than 19 points a game. But it's where those points come from that make him unique for a big man.
"The thing that Mack has really worked on is his outside game," Pilgrims coach Ryan Bales said. "And it's a tough matchup at times for other teams, because if you put a smaller guy on him, he can take him in the post and really bury somebody in there. You can put a taller guy on him, he can step out and knock down the open shot."
"We really wanted to improve that aspect of my game," Mercer said. "I've always been able to shoot 15 footers and midrange and close range, but coach said if I wanna help improve the team and everything like that, then I really need to expand my game."
Also expanding: The list of Division I schools interested. He's already got offers from Boston College, Indiana State and Belmont.
Butler and Notre Dame are recruiting him too.
"He's very coachable," Bales said. "That's something I would say to any college coach, anyone asking, 'what's he like?' He's always willing to listen. I think that's a great trait for any player trying to improve."
Especially ones with size 14 shoes.