Celtics hold off Cavaliers in preseason opener, 124-113

The Boston Celtics defeated the Cleveland Cavaliers 124-113 in the teams’ first preseason game, giving Cleveland an early setback as both clubs begin the long runway toward the regular season.

The result means the Cavaliers, who entered the preseason looking to get continuity and early rotation looks, will now have to regroup after dropping their opening contest. For Boston, the win provides a positive start to preseason evaluations, even if the matchup carries only exhibition stakes.

Preseason games often function as a proving ground for lineup combinations, defensive schemes, and bench depth. With the score tight at moments and separated by late-game execution, Boston’s ability to close out possessions played a role in maintaining the edge after Cleveland had opportunities to respond.

For Cleveland, the focus will be on what the early minutes revealed about how the group handles pace and spacing when lineups change quickly. Preseason is also where coaching staffs typically refine shot selection and offensive continuity, then adjust coverage and rebounding priorities as film comes in.

The Celtics and Cavaliers will treat the 10-point margin as a concrete reference point, but also as a reminder that preseason success is not measured by a single box-score output. What matters next is how each team uses the game to guide practice emphasis, including defensive communication and transition decisions that are often magnified when rotations are in flux.

Cleveland’s next step is to turn this first loss into clearer process. Boston’s next step is to keep building whatever defensive and offensive habits showed up most consistently, knowing preseason performances can vary widely from night to night as playing time is managed.