Watch Celtics’ Jayson Tatum Throw Down Massive Dunk Against Mavericks

It took Jayson Tatum less than three minutes into Monday’s game against the Dallas Mavericks to make the highlight reel.

Off a handoff from Al Horford at the top of the key, Tatum drove the lane and threw down a one-handed slam over Mavericks forward Maxi Klebler.

Watch the dunk here:

.@JayTatum0 slam = ✅
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Tatum only is 19 years old, but he attacks the rim like a seasoned veteran.