WATCH: Jayson Tatum posterizes defender in Summer League game

Jayson Tatum and the Boston Celtics took on Markelle Fultz and the Philadelphia 76ers Tuesday night, and both young stars were shining brightly.

Early in the game, Fultz made his presence known right out of the gate (watch here). Not to be outdone, Tatum put on a display of athleticism of his own en route to a couple impressive buckets.

Then right as the second half was about to end, Tatum really did something special, posterizing a defender in the process.

Here’s a different look at the same dunk from another perspective.

Also, note the stare-down by Tatum in the aftermath of his big-time slam.

That had Celtics top personnel man Danny Ainge smiling, along with every Celtics fan out there watching. This young man is going to fit in nicely with the group of talent Ainge has assembled in Boston.