Now things figure to get a tad tougher. On Monday she'll face Serena Williams, whose 13 Grand Slam titles include four at the All England Club.
Williams came close to exiting Saturday, needing every one of her tournament-record 23 aces to come back and edge 25th-seeded Zheng Jie of China, 6-7 (5), 6-2, 9-7. Williams won all 18 of her service games and saved all six break points she faced.
Her buddy and possible London Olympics mixed doubles partner, Andy Roddick, did lose. The 29-year-old American blew a kiss to the Centre Crowd as he walked off after being beaten, 2-6, 7-6 (8), 6-4, 6-3, by No. 7-seeded David Ferrer, but said he hasn't made up his mind about his future in the sport.
Another American, Sam Querrey, also departed, with a 7-6 (6), 6-4, 6-7 (2), 6-7 (3), 17-15 loss to No. 16 Marin Cilic of Croatia. The 51/2-hour match is the second-longest in tournament history.
Two other U.S. men did make the fourth round: 126th-ranked qualifier Brian Baker and 10th-seeded Mardy Fish, who is in his first tournament since having a medical procedure on his heart in late May.
Winners also included No. 4 Andy Murray; No. 5 Jo-Wilfried Tsonga, No. 9 Juan Martin del Potro, and No. 27 Philipp Kohlschreiber, who beat the man who beat Rafael Nadal, Lukas Rosol, 6-2, 6-3, 7-6 (6).