Roger Federer regrouped after a fortuitously timed rain delay to move on at the U.S. Open in four sets.
The second-seeded Federer was a game from losing the first set to Marcel Granollers in the third round on Sunday when play was stopped because of lightning.
After they returned to the court two hours later, Granollers won the set, but Federer dominated the rest of the match in a 4-6, 6-1, 6-1, 6-1 victory.
“He was doing a lot of things really well,” Federer said later.
Granollers was looking to make the fourth round at the U.S. Open for the second straight year.
Federer next faces 17-seeded Roberto Bautista Agut of Spain, who beat Adrian Mannarino 7-5, 6-2, 6-3. The 17-time Grand Slam champion has dropped one set through three matches. “I feel very explosive, quick,” Federer said.
