Celtics Outlast Raptors 83-80 in Summer League Overtime Thriller

Boston edged Toronto 83-80 in overtime at Summer League action in Las Vegas, with both sides missing key rotation pieces. The three-point margin capped a tightly contested defensive battle at the Pavilion.

The decisive moment

Boston and Toronto were deadlocked through regulation, forcing extra time before the Celtics finally pulled away for an 83-80 win. The tight final margin reflected a defensive grind that stayed close from start to finish.

By the numbers

Final score: Celtics 83, Raptors 80 (OT)
Margin of victory: 3 points
Venue: Pavilion, Las Vegas, NV
Event: 2026 NBA Summer League

Neither team separated by more than a handful of points for most of the night, and the overtime period was needed to settle it.

What it means

For Boston, the overtime win offers an encouraging data point from Summer League play, even with Jayson Tatum sidelined due to a day-to-day knee issue and not involved in the exhibition setting. For Toronto, the narrow loss came without several regulars available, including Immanuel Quickley (hamstring), Brandon Ingram (heel) and Collin Murray-Boyles (finger), all listed as day-to-day.

Summer League results carry limited weight toward the regular season, but close, competitive outings like this one give both coaching staffs useful evaluation film on their younger and fringe roster pieces as the 2026-27 NBA season approaches.

What to watch next

Both clubs continue Summer League play in Las Vegas, with roster health for Quickley, Ingram, Murray-Boyles and Tatum among the storylines to track as each team's evaluation window continues.