Second-seeded Simona Halep needed three sets to win her first-round match at the US Open. Ditto for Angelique Kerber, Venus Williams and Andrea Petkovic. Sometimes the early pressure is the most intense pressure.
Roger Federer rolled to a 6-2, 6-0 victory over wild card Peter Polansky in the second round of the Rogers Cup, and Stan Wawrinka, Ernests Gulbis and Richard Gasquet also advanced in the U.S. Open tuneup on Tuesday.
Former Wimbledon champion Petra Kvitova has withdrawn from the Aegon International with a hamstring injury, giving British wild-card entry Heather Watson a walkover into the semifinals of the grass-court tournament.