Photos: Celtics 113, Bucks 107 (OT); Game 1 NBA first-round playoffs

Bucks forward Khris Middleton makes a three-pointer to tie the game with the Celtics at the end of the second half to force overtime in Game 1.

Khris Middleton shoots a three-point basket over Boston's Jaylen Brown with less than a second to play in the fourth quarter.

Khris Middleton celebrates with Matthew Dellavedova (right) after hitting a three-point shot sending the game against the Boston Celtics into overtime.

Celtics guard Terry Rozier reacts after hitting a shot against the Bucks in the second half in Game 1.

Celtics guard Terry Rozier (12) make a shot against the Milwaukee Bucks in the second half of Game 1.

Giannis Antetokounmpo of the Bucks reacts after fouling out during overtime.

Bucks forward Giannis Antetokounmpo reacts after a foul call in the second half.

Bucks forward Giannis Antetokounmpo tries to dribble around Celtics forward Al Horford.

Bucks forward Giannis Antetokounmpo drives past Celtics forward Marcus Morris.

Giannis Antetokounmpo gets past Boston's Marcus Morris on a drive to the basket.

Eric Bledsoe takes a shot past Boston's Aron Baynes and Terry Rozier.

Bucks guard Eric Bledsoe is fouled by Celtics forward Al Horford (42).

Bucks center John Henson hangs from the rim after a dunk.

Milwaukee's Giannis Antetokounmpo is defended by Semi Ojeleye (right) and Al Horford.

Giannis Antetokounmpo of the Bucks celebrates in front of Boston's Al Horford (42) and Aron Baynes.

Jayson Tatum drives to the basket past Milwaukee's Giannis Antetokounmpo and Khris Middleton (top right).

Celtics forward Al Horford defends a shot by Bucks forward Giannis Antetokounmpo.

Bucks guard Eric Bledsoe (shoots the ball over Celtics guard Jaylen Brown.

Celtics forward Al Horford shoots the ball over Bucks forward Giannis Antetokounmpo.

Bucks center Tyler Zeller dunks the ball against the Celtics.

Milwaukee Bucks' John Henson dunks during the first quarter of Game 1 of an NBA basketball first-round playoff series against the Boston Celtics, in Boston, Sunday, April 15, 2018. (AP Photo/Michael Dwyer) ORG XMIT: MAMD112

Bucks guard Eric Bledsoe looks to pass while guarded by Celtics forwards Al Horford and Marcus Morris.

Malcolm Brogdon (center) passes off under pressure from Boston's Jaylen Brown (left) and Terry Rozier.

Malcolm Brogdon of the Bucks drives against Terry Rozier.

Eric Bledsoe tries to pass against Boston's Shane Larkin.

Giannis Antetokounmpo defends Al Horford.

Boston Celtics head coach Brad Stevens looks on against the Milwaukee Bucks.

Giannis Antetokounmpo reacts to a traveling call against him.

Tony Snell of the Bucks fouls Jaylen Brown.

Eric Bledsoe collides with Boston's Jayson Tatum.

Celtics forward Jayson Tatum shoots over Bucks guard Jason Terry.

Celtics guard Terry Rozier (12) passes the ball while guarded by Bucks forward Giannis Antetokounmpo.

Bucks center John Henson blocks the shot of Boston's Jayson Tatum.

Boston's Jayson Tatum reacts after scoring during the first quarter.

Bucks center Tyler Zeller shoots the ball over Celtics forward Semi Ojeleye.

Bucks guard Jason Terry guards Celtics guard Shane Larkin.

Bucks guard Eric Bledsoe loses the ball in between Celtics defenders.

Eric Bledsoe of the Bucks takes a shot against Aron Baynes.

Celtics center Greg Monroe and Bucks guard Jason Terry battle for a loose ball.

Bucks head coach Joe Prunty reacts in the second quarter.

Celtics head coach Brad Stevens reacts to a call.

Celtics guard Jaylen Brown works for the rebound against the Bucks.

Milwaukee's John Henson (left) and Boston's Aron Baynes tip off during the first quarter of Game 1 of the Eastern Conference first-round playoffs.

T-shirts cover the seats at TD Garden before Game 1.