The Celtics found themselves needing a spark in Monday night’s matchup against the Bucks. It arrived when Payton Pritchard hopped off the bench.
Just over a minute into his first shift, he sprinted the floor and buried a transition three from the corner, evening the score at 19. He made four of his first five attempts — crucial for an offense that struggled to find a rhythm.
While Boston entered halftime a frigid 8/25 [32 percent] from beyond the arc, Pritchard converted on 5/8 triples and was 7/10 from the field. He had 19 points in the first two frames, subbing out to a loud ovation from the TD Garden faithful late in the first half…