Chicago at Indiana, 7 p.m.
LA Clippers at Orlando, 7 p.m.
Washington at Philadelphia, 7 p.m.
Toronto at Charlotte, 7 p.m.
Utah at Boston, 7:30 p.m.
Cleveland at Milwaukee, 8 p.m.
Golden State at Minnesota, 8 p.m.
New Orleans at Memphis, 8 p.m.
Phoenix at San Antonio, 8:30 p.m.
Dallas at Oklahoma City, 9:30 p.m.
Pittsburgh at N.Y. Rangers, 7:30 p.m.
Winnipeg at Chicago, 8 p.m.
Nashville at Colorado, 9:30 p.m.
Phoenix at Anaheim, 10 p.m.
ATP World Tour Finals at London
Taipei WTA Ladies Open at Taipei, Taiwan
Eastern Conference semifinals
Houston at New York, 8 p.m. (second leg, score tied 2-2)
New England at Sporting Kansas City, 9 p.m. (second leg, New England leads 2-1)
NASA celebrates Earth Day with #GlobalSelfie
Lytro unveils camera that can focus a photo after shooting it