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How to watch: 6 a.m. to 4:30 p.m. on the Tennis Channel; streaming on the Tennis Channel app.
As all four singles matches move to the covered stage of Philippe Chatrier Court, the players have more protection from the sour, chilly weather that has dogged Paris over the past couple weeks. Now, the second day of quarterfinals features some familiar champions and some players who do not usually go this deep in major tournaments.
Here are some matches to keep an eye on.
Because of the number of matches cycling through courts, the times for individual matchups are at best a guess and are certain to fluctuate based on the times at which earlier play is completed.