Jayson Tatum might not need long to win his first championship with the Boston Celtics.
The Celtics improved to 3-0 in the NBA Summer League on Tuesday with an 88-83 victory over the Philadelphia 76ers. Tatum, the No. 3 pick in the draft, had 15 points and six rebounds.
Boston, winner of a record 17 NBA championships, is one of six undefeated teams after the preliminary stage on the campus of UNLV. Seedings and matchups for the tournament portion were to be released later Tuesday.
The Memphis Grizzlies also are 3-0 after overcoming 37 points from Utah rookie Donovan Mitchell in an 84-81 overtime victory. Mitchell, the No. 13 pick from Louisville, added eight steals.
A look at the six games played Tuesday, including one that went to sudden death:
CELTICS 88, 76ERS 83
Jabari Bird also had 15 points for the Celtics, going 7 of 10 from the field. Demetrius Jackson scored all of his 14 in the fourth quarter, while Ante Zizic had 12 points and 13 rebounds.
Jaylen Brown played just 13 minutes, scoring seven points before leaving with a bruised thigh.
Timothe Luwawu-Cabarrot had 16 points for the 76ers (1-2).