At their best in Milwaukee

Tatum, Horford both notch 30 points as Boston evens series

MILWAUKEE — The Celtics roared back to a resounding Game 4 win, beating the Bucks 116-108 in Milwaukee to tie up this Eastern Conference semifinal series at 2-2.

Al Horford had a night to remember, scoring 30 points — his career playoff high — to key Boston.

Jayson Tatum came up big down the stretch after a slow start. He finished with 30 points.

Bucks star Giannis Antetokounmpo was clearly exhausted in the second half, but finished with 34 in the loss.

Boston had 48 points in the paint tonight. They had just 44 total over Games 1 and 2 in this series.

Grant Williams started in place

of Robert Williams, who was unavailable due to left knee sore

ness — a residual effect from his meniscus surgery in March.

Game 5 will be Wednesday at TD Garden.

The Bucks’ Jrue Holiday drives past the Celtics’ Al Horford the first half of Game 4 on Monday in Milwaukee. MORRY GASH/AP

MORRY GASH/AP The Bucks’ Giannis Antetokounmpo loses the ball as he drives to the basket against the Celtics in Game 4 on Monday in Milwaukee.