Jrue Holiday converted a three-point play with 38 seconds remaining, then made a game-saving steal as the Boston Celtics overcame an 18-point deficit to beat the Indiana Pacers 114-111 for a 3-0 lead in the Eastern Conference finals on Saturday night.

The Celtics can clinch their second NBA Finals appearance in three seasons with a win in Game 4 on Monday in Indianapolis.

Jayson Tatum matched his playoff career high with 36 points to go with 10 rebounds and eight assists. Jaylen Brown added 24 points and Al Horford had 23 points with seven 3-pointers to help Boston win its sixth straight playoff game and improve to 5-0 on the road.

Andrew Nembhard scored a career-high 32 points, but Holiday, who was questionable before the game due to an illness, stole the ball from him with 3.3 seconds remaining and Indiana down 112-111.

Indiana had a chance to tie the game but Aaron Nesmith's 3-pointer was off the mark. 

T.J. McConnell had 23 points, nine rebounds and six assists, while Myles Turner and Pascal Siakam added 22 points apiece for the Pacers, who played without All-NBA guard Tyrese Haliburton (left hamstring).

His presence was sorely missed as the Celtics closed the game on a 13-2 run to send Indiana to its first loss in seven postseason home games.

The teams combined to make six 3s in the fourth quarter, with Horford’s seventh of the night drawing Boston within 111-109 with 1:12 to play. Holiday then converted his 3-point play to give the Celtics their first lead since early in the second quarter.