Jayson Tatum showed up courtside in Las Vegas this week. But he wasn’t there to scout prospects or work on his own game. He came to watch a guy who used to share a Duke locker room with him — Amile Jefferson — get his first head coaching win in the NBA Summer League.
Tatum got mic’d up for the moment, and the league’s social media team caught it all. The Celtics star forward walked onto the floor after Boston’s win over Toronto and made it clear why he was there.
“I’m very proud of Amile for being a head coach. But it’s his first time coaching. I had to come support my brother,” Tatum said.
That kind of loyalty runs deep. Jefferson and Tatum were teammates at Duke during the 2015-16 season, when the Blue Devils made a run to the Sweet 16. Jefferson went undrafted and bounced around the G League and overseas before moving into coaching. Now he’s running the sideline for Boston’s Summer League squad, and his old buddy showed up to see it happen.
Tatum’s long road back
The timing matters because Tatum isn’t just some celebrity guest dropping by for good optics. He’s coming off a brutal year. He tore his Achilles during the 2025 playoffs, missed nearly all of the 2025-26 regular season, and only got back on the floor for 16 games before the Celtics got bounced in the first round by the 76ers.
In those 16 regular-season games he averaged 21.8 points, 10 rebounds and 5.3 assists. In the playoffs against Philly — where Boston blew a 3-1 series lead — he put up 23.3 points, 10.7 rebounds and 6.8 assists. Not bad for a guy still shaking off rust from a major injury.
But the Celtics lost that series in seven games after going up 3-1, and now the front office has real questions to answer. They finished 56-26 and grabbed the No. 2 seed in the East, which exceeded most preseason expectations. But the first-round exit stung, especially after the way they collapsed.
What’s next for Boston
The Celtics already made their draft picks. Now free agency will determine whether they can upgrade a roster that clearly isn’t deep enough to survive a seven-game series against a physical team like Philadelphia. Tatum is healthy again, but the team needs more around him.
For now though, Tatum is focused on summer. On being present. On supporting a former teammate who’s grinding his way up the coaching ladder. The NBA Summer League isn’t where championships are won, but it’s where real relationships show up. Tatum proved that much.
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