In what might be the most-anticipated matchup on the Saturday NBA schedule, the Philadelphia 76ers (31-18) and the Boston Celtics (32-15) will square off in a matchup that pits two of the top teams in the Eastern Conference against one another. Josh Richardson (hamstring) will miss the game for Philadelphia, while Kemba Walker (knee) and Enes Kanter (hip) are questionable for Boston. Tip-off is at 8:30 p.m. ET at TD Garden. Sportsbooks list the Celtics as 2.5-point home favorites, holding steady from the opener, while the over-under, or total number of points Vegas thinks will...