The little-used guard got the call when Boston couldn't stop the Clippers' guards. He delivered stout defense and more in an overtime win.

Will we be seeing more of the young guard in the future? Was this the Celtics' way of pumping up his potential trade value?

You never know when you’re going to play,” Jayson Tatum said. “Game’s not going the way it’s supposed to or we expect. Joe calls your number to come and shut somebody down and give us a spark off the bench,