Amari Williams Joins Celtics Last Minute and Impresses in Unexpected Debut

Called up at the last minute, Amari Williams made an immediate impact in Boston's thrilling overtime win.

On Friday, Amari Williams was gearing up for another day in the NBA G League. By nightfall, he was suiting up for the Boston Celtics - and making his presence felt in crunch time.

Williams, the former Kentucky big man, got the call every G League player dreams of. Boston needed reinforcements, and fast.

So Williams hopped on a plane and landed just a couple of hours before tipoff. No shootaround.

No walkthrough. Just a uniform, a role, and a moment.

And when that moment came - in overtime against the Brooklyn Nets - Williams didn’t flinch.

In just five minutes of action, he gave the Celtics exactly what they needed: energy, toughness, and a couple of timely plays that helped seal a 130-126 win. His stat line won’t jump off the page - 3 points, 1 assist, 1 block - but the impact was undeniable.

A critical bucket. A key defensive stop.

A hustle play that swung momentum. Sometimes, it’s not about how much you play - it’s about when.

For Boston, it was a gutsy win in a tight game. For Williams, it was a breakthrough moment.

This is the kind of story that reminds you why the G League exists - not just as a developmental tool, but as a launchpad. Williams didn’t just fill a roster spot; he earned his minutes in real time, in a real game, with real stakes.

Coming out of Kentucky, Williams was known for his size, mobility, and defensive instincts. On Friday night, all three were on display - even in limited minutes. The Celtics trusted him enough to throw him into the fire in overtime, and he responded like a pro.

It’s unclear what comes next for Williams - whether this was a one-night cameo or the start of something more. But for one night, under the bright lights, he proved he belongs.