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.
Andrea Petkovic vs. Garbiñe Muguruza
Garbiñe Muguruza, a two-time major champion, has never been past the round of 16 at the U.S. Open. After a pair of tiebreakers secured her first-round victory, she will hope to have an easier path forward. But Andrea Petkovic has beaten Muguruza in each of their three meetings on tour. With the last meeting in 2016, before Muguruza’s Grand Slam tournament titles, Muguruza will look to shake off any mental blocks and push past Petkovic’s aggressive style of play.
COURT 5 | 2 P.M.
Félix Auger-Aliassime vs. Bernabé Zapata Miralles
Félix Auger-Aliassime, the 12th seed, overcame Evgeny Donskoy, a qualifier, in the first round, but needed four sets, with three tiebreakers, to secure passage into the second round, where he will face another qualifier.
Bernabé Zapata Miralles beat Feliciano López in five sets for his first main draw victory at a major championship. The victory will propel him into the top 100 when the men’s rankings are recalculated next week, after Miralles secured three Challenger-level titles within the last year.
ARTHUR ASHE STADIUM | 7 p.m.
Sloane Stephens vs. Coco Gauff
Coco Gauff, the 21st seed, eked past Magda Linette on Monday night, coming back from a set and a break down to win in three sets. Sloane Stephens, the 2017 U.S. Open women’s singles champion, also needed three sets to reach the second round, beating Madison Keys, whom she also beat in the 2017 final. The two Americans will meet for the first time: Stephens will hope to overwhelm Gauff with powerful groundstrokes before the 17-year-old can adjust with a counterpunching rhythm.
LOUIS ARMSTRONG STADIUM | 7 p.m.
Kevin Anderson vs. Diego Schwartzman
Kevin Anderson and Diego Schwartzman will provide a study in contrasts in their fourth meeting on tour. Schwartzman, at 5 feet 7 inches, is over a foot shorter than Anderson, who is 6-8, and their heights define their style of play. Anderson has a powerful serve-and-volley game, which allows him to penetrate into the court easily. Schwartzman is more defensive, using his movement and excellent positional sense to outmaneuver opponents even as they limit his space.
Sleeper match of the day.
COURT 9 | 11 a.m.
Philipp Kohlschreiber vs. Pablo Andújar
Philipp Kohlschreiber and Pablo Andújar are veterans of the men’s tour. Each made his debut in the early 2000s. Each feels most comfortable at the baseline, grinding out points and wearing out his opponent. For the casual fan, watching them can be a demonstration of just how much effort a best-of-five-sets match can extract from a player. For junior athletes, it can be a lesson in patience and consistency.