Detroit Pistons vs. Boston Celtics Boston; Thursday, 7:30 p.m. EST BETMGM SPORTSBOOK LINE: Celtics -13.5; over/under is 228.5 BOTTOM LINE: Detroit plays Boston in Eastern Conference action Thursday. The 120.1 points per game the Celtics score are 7.1 more points than the Pistons allow. LAST 10 GAMES: Celtics: 8-2, averaging 118.0 points, 45.8 rebounds, 26.1 assists, 7.4 steals and 6.6 …