Tuesday's TV highlights: 'Downward Dog' on ABC
30 for 30 The rivalry between the Celtics and the Lakers, who faced off in three NBA Finals in a four-year span during the mid-1980s, is documented in a three-episode series. Parts 1 and 2 air at 5 and 7 p.m. ESPN; 9 and 11 p.m. ESPN2
America's Got Talent Auditions continue in this new...