Payton Pritchard came off the bench to score a game-high 27 points and deliver 10 assists, leading the Boston Celtics to a 123-99 victory over the visiting Detroit Pistons on Thursday night.Pritchard shot 10 of 20 from the field, including 7 of 15 from 3-point range.The Celtics received 23 points from Derrick White and 19 from Kristaps Porzingis while beating the Pistons for the 12th consecutive meeting.Rookie Ronald Holland II scored a career-high 26 points for the Pistons, who shot 7 of 37 (18.9 percent) from 3-point territory. Detroit’s Cade Cunningham finished with 18 points, eight rebounds and eight assists. Jaden Ivey, who logged 10 points on 3-of-14 shooting, was the only other Detroit player who reached double figures.The Celtics were without Jayson Tatum (knee) and Sam Hauser (adductor), two of the team’s top shooters. Tatum leads the team in points per game (28.2) rebounds per game (8.9) and assists per game (5.7). Hauser, one of Boston’s top reserves, is averaging 8.5 points in 22.2 minutes per contest.The Pistons didn’t have Jalen Duren (wrist). The center is averaging a team-high 8.9 rebounds per game.