Comcast Corp.-owned NBC Sports will broadcast Olympics events on the cable channels CNBC, MSNBC and Bravo, in addition to the 24-hour NBC Sports Network.

MSNBC, in a ratings battle with Fox News and CNN, will air 155.5 hours of wrestling, badminton, basketball and other Olympics events. CNBC will air 73 hours of men's and women's boxing, and Bravo will carry 56 hours of tennis between July 28 and Aug. 3

— Bob Fernandez