Watch Jayson Tatum drain shot after shot at Celtics practice

Jayson Tatum and Jaylen Brown chat during a drill at the Celtics practice facility in Waltham on Friday. John Tlumacki/The Boston Globe

Celtics rookie Jayson Tatum made his mark at the team’s offseason practice on Friday, draining a barrage of three-pointers in an impromptu shooting contest.

ESPN’s Chris Forsberg reported that Tatum and fellow No. 3 pick Jaylen Brown (now known as “7-11”) faced off in a three-point shooting contest Friday. While Forsberg didn’t say who won, he did capture Tatum draining 10 treys in a row.

Tatum only made 40 three-pointers during his one season at Duke, the lowest total out of any Blue Devils player with more than two 3-pointers attempted last season. But if this casual shootaround is any indication, he’s capable of knocking down quite a few baskets from distance.