After 15 consecutive wins to kick off the season, the Cleveland Cavaliers have finally lost their first game, 120-117, on the road against the defending champion Boston Celtics. The defeat ensures that Cleveland would not claim sole possession of the second-longest undefeated start to a season in NBA history.

The NBA's last undefeated team has fallen. The Boston Celtics beat the Cleveland Cavaliers 120-117 on Tuesday in the NBA Cup, ending the Cavs' historic

Cleveland became just the fourth team in NBA history to start a season 15-0 with a win over the Charlotte Hornets Sunday night. It's their best start in franchise history as well as their longest win streak all-time for the organization. The Cavs offense ...

Jayson Tatum had 33 points, 12 rebounds and seven assists on Tuesday to help the Boston Celtics defeat the visiting Cavaliers 120-117, ending Cleveland's season-opening, 15-game winning streak.

The Celtics survived a second-half charge from the Cavaliers and rode hot shooting on 3s to a 120-117 win on Tuesday.

The Cleveland Cavaliers are undefeated no more. Kenny Atkinson’s team had one of the greatest runs in NBA history to start the season. At 15 consecutive wins, they finished second behind only the 2015-16 Golden State Warriors and their 24 triumphs.