CLEVELAND (AP) — The Cleveland Cavaliers' NBA record-tying playoff winning streak is over. The Boston Celtics put a stop to it on Sunday with an improbable victory just hours after announcing their top player is done for the season.

The Cavaliers had won 13 straight postseason contests until Avery Bradley nailed a 3-pointer with less than one second left to give the Celtics a 111-108 triumph at Cleveland. The shot bounced on the rim four times before getting the Celtics within two games to one in the Eastern Conference finals. Bradley's bucket also capped a gritty comeback after Boston fell behind by 21 in the third quarter.

The Celtics did it without Isaiah Thomas, who has been ruled out for the remainder of the postseason with a hip injury. Coach Brad Stevens indicated that the All-Star guard could need surgery for the hip impingement, which has bothered Thomas since March. The injury was so severe that Stevens said he was surprised Thomas was able to play Game 7 of Boston's conference semifinal series against Washington.

Bradley finished with 20 points, while teammate Marcus Smart added 27 on 8 of 14 shooting overall. Boston hit 18 3-pointers, with Smart going 7-for-10.

The Celtics also hounded LeBron James, who finished with just 11 points on 4-for-13 shooting. Kyrie Irving finished with a game-high 29 points for the Cavaliers, while Kevin Love added 28.

Game 4 is Tuesday in Cleveland.