PREVIEW: The Philadelphia 76ers and Boston Celtics will clash in a regular-season game at TD Garden on Sunday, with tipoff scheduled at 8 p.m. EST. The 76ers (33-26) are on a three-game winning streak and sit sixth in the East, while Boston (39-20) is second in the conference and is coming off a dominant performance against the Brooklyn Nets on Friday. Paul George, Joel Embiid, and Johni Broome will not play for the visitors , which significantly impacts Philadelphia's offensive firepower heading into this matchup. Joel Embiid's contribution was huge in Philadelphia's last two wins, but he has been ruled out for Sunday's matchup, meaning league No. 5 scorer Tyrese Maxey will have to carry a big offensive load. The Celtics dominated the Brooklyn Nets by 37 points and made history by recording the highest offensive rating in an NBA game. Jaylen Brown is playing the best season of his career and has fully compensated for the absence of Jayson Tatum. Philadelphia sits at 19-8-1 ATS as a road team, which amounts to a 70 percent cash rate, besting the majority of the league. Both teams will rely heavily on their supporting cast and bench depth as injuries plague their rotations, setting the stage for a contest where role players could ultimately determine the outcome in Boston.