All times are Eastern.

COLLEGE FOOTBALL The start of the college football season is a week earlier than you probably thought, thanks to two games on Saturday. Fans are affectionately calling the matchups “Week 0” games. And at least one, Miami vs. No. 8 Florida (7 p.m., ESPN), involves the allure of an intrastate rivalry, implications for the rankings and two power conferences. In a nightcap, Arizona plays Hawaii in Honolulu (10:30 p.m., CBS Sports Network).

TENNIS The United States Open begins Monday with wall-to-wall coverage on the ESPN family of networks. But before that, on Saturday, you can catch the women’s final of the N.Y.J.T.L. Bronx Open (2 p.m., Tennis Channel) and the men’s final of the Winston-Salem Open in North Carolina. ( 5 p.m. , Tennis Channel ).

M.L.B. It’s hard to look elsewhere when the red-hot Mets are once again facing the rival Atlanta Braves, but this weekend also features the Los Angeles Dodgers going up against the Yankees in a battle of the teams with the best records in the National and American Leagues. On Sunday night in prime time (7 p.m., ESPN), Clayton Kershaw (13-2) is scheduled to start against Domingo German (16-3) in what is likely to be the best pitching matchup of the series.