Romeo Langford scored a career-high 16 points off the bench Friday night in Boston's 112-107 victory over visiting Atlanta.
The Celtics' rookie, a former New Albany High School star and Indiana University standout, also finished with five rebounds, three blocked shots and a steal in a career-high 29 minutes.
Two days after making his first-ever start, the 6-foot-4 guard came off the bench to make 5 of 11 shots, including 2 of 5 from 3-point range. He also went 4-for-6 from the free throw line.
The Celtics (36-15), who are second in the Atlantic Division, visit Oklahoma City at 3:30 p.m. Sunday (NBATV) and Houston at 9:30 p.m. Tuesday (TNT) before hosting the Los Angeles Clippers at 8 p.m. Thursday (TNT).