SHANGHAI — Eighth-seeded John Isner reached the third round of the Shanghai Masters by beating Kevin Anderson of South Africa 7-6 (3), 6-7 (8), 7-6 (7) Tuesday.
Neither player was able to break serve in the match, the first at the tournament to go to three tiebreakers. Isner saved three break points and Anderson saved four.
Isner finished the match with 24 aces and Anderson had 21.
In the first round, 14th-seeded Kei Nishikori of Japan defeated Di Wu of China 6-2, 6-4.
Also, 13th-seeded Stanislas Wawrinka of Switzerland beat Albert Ramos of Spain 7-6 (1), 7-6 (5), 15th-seeded Gilles Simon of France beat Jurgen Melzer of Austria 6-4, 6-2, and Florian Mayer of Germany defeated Bernard Tomic of Australia 6-4, 6-0.
At Osaka, Japan, Zheng Jie of China advanced to the second round of the Japan Open with a 4-6, 7-5, 6-4 win over Maria Jose Martina Sanchez of Spain.
Zheng broke her opponent three times in the final set at the Utsubo Tennis Center and will face Pauline Parmentier in the second round.
In other matches, sixth-seeded Anabel Medina Garrigues dropped the first set but recovered for a 3-6, 6-2, 6-2 win over Camila Giorgi.
Wild-card entry Tamarine Tanasugarn of Thailand upset fifth-seeded Yaroslava Shvedova of Kazakhstan 6-3, 6-2.
Virginie Razzano booked a second-round meeting with top-seeded Sam Stosur after defeating Thai qualifier Nudnida Luangnam 6-3, 6-3. Laura Robson of Britain, Chanelle Scheepers of South Africa and Mirjana Lucic of Croatia also advanced.