Boston Celtics forward Jayson Tatum, right, goes for a layup against Philadelphia 76ers guard Tyrese Maxey, second from left, during the first half in Game 1 of a first-round NBA playoffs basketball game, Sunday, April 19, 2026, in Boston. (AP Photo/Robert F. Bukaty)

Boston Celtics guard Derrick White (9) goes for a layup against the Boston Celtics during the first half in Game 1 of a first-round NBA playoffs basketball game, Sunday, April 19, 2026, in Boston. (AP Photo/Robert F. Bukaty)

Boston Celtics forward Jayson Tatum (0) drives against Philadelphia 76ers forward Paul George, right, during the first half in Game 1 of a first-round NBA playoffs basketball game, Sunday, April 19, 2026, in Boston. (AP Photo/Robert F. Bukaty)

Boston Celtics guard Jaylen Brown (7) drives against Philadelphia 76ers guard Kelly Oubre Jr. (9) during the first half in Game 1 of a first-round NBA playoffs basketball game, Sunday, April 19, 2026, in Boston. (AP Photo/Robert F. Bukaty)

Boston Celtics forward Jayson Tatum goes in for a dunk against the Philadelphia 76ers during the first half in Game 1 of a first-round NBA playoffs basketball game, Sunday, April 19, 2026, in Boston. (AP Photo/Robert F. Bukaty)

BOSTON, MA - APRIL 19: Neemias Queta #88 of the Boston Celtics lays the ball up past Andre Drummond #1 of the Philadelphia 76ers during the second half of Game One of the Eastern Conference First Round NBA Playoffs at TD Garden on April 19, 2026 in Boston, Massachusetts. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement. (Photo By Winslow Townson/Getty Images)

BOSTON, MA - APRIL 19: Jayson Tatum #0 of the Boston Celtics smiles during the second half of their win over the Philadelphia 76ers in Game One of the Eastern Conference First Round NBA Playoffs at TD Garden on April 19, 2026 in Boston, Massachusetts. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement. (Photo By Winslow Townson/Getty Images)

BOSTON, MA - APRIL 19: Head coach Joe Mazzulla of the Boston Celtics applauds his team during the second quarter of Game One of the Eastern Conference First Round NBA Playoffs against the Philadelphia 76ers at TD Garden on April 19, 2026 in Boston, Massachusetts. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement. (Photo By Winslow Townson/Getty Images)