On December 4, the Boston Celtics and Detroit Pistons played a stellar basketball game at TD Garden — a thrilling, back-and-forth affair that saw the two teams combine for 250 points and 41 made three-pointers. Just over a week later, Thursday night rematch on the same court yielded a vastly different result. The Celtics shrugged off an ugly first quarter to assume a comfortable advantage over the Pistons that they maintained throughout a game that largely lacked much for drama, and picked up their 20th win of the season with a 123-99 victory at home.