Isaiah Thomas leaves Dikembe Mutombo speechless

The Atlanta Hawks held on for the one-point victory against the Boston Celtics in Game 1, but it was anything but easy.

Despite building a 17-point halftime edge, the Celtics managed to storm all the way back in the fourth quarter thanks to some heart-stopping plays like the one above by Isaiah Thomas' miraculous three.

Hawks legend Dikembe Mutombo was stressed.