Angelique Kerber made light work of her BNP Paribas Open second-round clash against Andrea Petkovic to emphasise her title credentials at Indian Wells.
Kerber, top seed in California after Serena Williams withdrew on Tuesday due to a knee injury, took less than an hour to beat her fellow German in straight sets.
The reigning US Open champion emerged with a 6-2 6-1 win to book a third-round clash against Pauline Parmentier, who beat Yulia Putintseva 6-2 6-3 on Saturday.
Venus Williams, who lost in the Australian Open final against her sister Serena in January, had to fight back against Jelena Jankovic to reach the third round.
After losing the first set comprehensively, the 36-year-old saved three match points on her way to a 1-6 7-6 (7/5) 6-1 victory.
Australia’s Samantha Stosur, seeded 15th, crashed out after a 4-6 6-4 6-4 defeat against world number 50 Julia Goerges while Shuai Peng was also a surprise 6-4 6-2 victor over Ana Konjuh.
Third seed Simona Halep breezed into round three as the Romanian ran out a resounding 6-4 6-1 winner over Croatia’s Donna Vekic.
Madison Keys, seeded eighth, won 6-1 7-5 against Colombia’s Mariana Duque-Marino while Caroline Wozniacki was a convincing 6-3 6-0 winner over Polish qualifier Magda Linette.
Japan’s Naomi Osaka won 6-4 6-2 against China’s Shuai Zhang, Czech ace Katerina Siniakova beat Spain’s Carla Suarez Navarro 6-3 7-5 and fifth seed Agnieszka Radwanska triumphed 6-3 6-4 against Sara Sorribes Tormo.