A ridiculous mini-dunk contest broke out at the Celtics practice today.

Kemba finishes the first half with a 3 to put the Celtics up by 17

LaMelo Ball with a ridiculous assist to Mark Williams in transition

Elfrid Payton freezes LeBron with a nice fake to get an easy layup

Bennedict Mathurin rejects Jalen Williams dunk attempt with replays