Al Horford drills buzzer-beating three to end Q1 Celtics on 21-4 run

James Harden crosses Patrick Beverley and hits the insane three over him and Paul George for the four point play

Klay Thompson ball fakes Al Horford then drills the shot! - ESPN

Horford is irate after the no call - TNT

J.R. Smith hits a deep three to beat the shot clock.