BOSTON (AP) Giannis Antetokounmpo had already picked up his dribble and spent half of a Eurostep when he realized he had nowhere to go with the ball.
Instead of attempting an off-balance shot or passing to a well-guarded teammate, the two-time NBA MVP flicked the ball high off the backboard, then followed it to the rim for a slam dunk.
Antetokounmpo had 24 points, 13 rebounds and 12 assists as the defending NBA champions swiped home-court advantage in the best-of-seven series
Jrue Holiday had 25 points and 10 rebounds, and Bobby Portis had 15 points and 11 boards for the Bucks
Jayson Tatum scored 21 and Jaylen Brown had 12 points, but the two Boston stars combined to shoot 10 for 31 in the game
Al Horford added 12 points and 10 rebounds for the Celtics, who fired up 50 3-pointers, making 18, and shot 33% from the floor as a team.
''Offensively, not our best night. I thought we guarded well enough,'' Celtics coach Ime Udoka said.