BOSTON — Joe Mazzulla did not show much concern about Payton Pritchard’s shooting slump in his new starting role to begin the year. On Sunday, it was easy to understand why.

The point guard erupted for 30 points, including 8-of-13 shooting from 3-point range, helping the Celtics beat the Clippers 121-118 at TD Garden for their second straight win. Pritchard is now shooting 13-of-23 from 3-point range in his last two games, which has helped raise his 3-point shooting percentage from 25 percent to 32 percent on the year in just two games.

After the win, Pritchard revealed some perspective on how he’s managed to snap out of the early season funk from beyond the arc.

“I feel like I consider myself a good shooter, and you’re always searching how to be better at shooting,” Pritchard said. “So

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