How to watch: From noon to 6 p.m. Eastern time on ESPN; 7 to 11 p.m. on ESPN2; and streaming on the ESPN app. In Canada on TSN from 11 a.m. to 11 p.m.; and streaming on TSN.ca and the TSN app.
Matches to keep an eye on.
Because of the number of matches cycling through courts, the times for individual matchups are estimates and may fluctuate based on when earlier play is completed. All times are Eastern.
LOUIS ARMSTRONG STADIUM | 11 a.m.
Garbiñe Muguruza, a two-time major champion, has never been past the round of 16 at the U.