Boston Celtics forward Jayson Tatum (0) drives toward the basket past Milwaukee Bucks guard Pat Connaughton, left, and forward Giannis Antetokounmpo, right, during the second half of Game 7 of an NBA basketball Eastern Conference semifinals playoff series, Sunday, May 15, 2022, in Boston. (AP Photo/Steven Senne)

Grant Williams scored a career-high 27 points and hit seven 3-pointers, Jayson Tatum added 23 and the Boston Celtics set a Game 7 record with 22 3-pointers to eliminate the NBA champion Milwaukee Bucks 109-81 on Sunday in the Eastern Conference semifinals.

Boston will face top-seeded Miami beginning Tuesday in a rematch of the 2020 East finals. The Heat beat the Celtics in six games in that series at Walt Disney World.

The Celtics trailed early but outscored the Bucks 61-38 in the second half to cruise to the victory. Boston used a whopping 54-point advantage from behind the arc to improve to 25-9 in decisive seventh games.

The Bucks are now 3-9. They went 4 for 33 (12.1%) from the 3-point line. That’s the second-worst 3-point percentage in a playoff game ever (minimum 30 attempts).

Giannis Antetokounmpo had 25 points, 20 rebounds and nine assists. But he was just 3 of 11 in the paint in the second half, including 1 for 6 the fourth quarter. Jrue Holiday added 21 points and eight assists. Brook Lopez finished with 15 points and 10 rebounds.

Story by Kyle Hightower.