It did not take long for Celtics rookie Hugo Gonzalez to make an impression with his new team after his NBA regular season debut on Friday night. Joe Mazzulla gave the 19-year-old the starting nod in the Celtics’ 119-113 loss to the Pistons on Sunday, giving him the assignment of hounding All-Star Cade Cunningham and other Pistons ball handlers.

Defensive lapses hurt Boston in its first two games. The Celtics gave up 42 points in the fourth quarter of a season-opening 117-116 home loss to the Philadelphia 76ers on Wednesday. Two nights later, the Knicks outscored them, 42-14, in the second quarter of a 105-95 loss.