Former world number one Serena Williams, Victoria Azarenka and Tsvetana Pironkova made up a 'Band of Mothers' who marched into the third round of the US Open.
Women's singles second seed Agnieszka Radwanska and sixth seed Simona Halep lost their Round of 16 matches on a rain-hit day at the French Open.
Radwanska will face China's Li Na for a place in the semi-finals.
Bulgaria's Tsvetana Pironkova pulled off a surprise win against a sick Varvara Lepchenko of the US here in the Kremlin Cup on Tuesday.
More than four years after her French Open title, Ana Ivanovic is finally back in a Grand Slam quarterfinal.
Maria Sharapova has backed to plans to silence tennis grunters even though the world number one is one of the worst offenders.
World number one Maria Sharapova was forced to dig deep before securing her place in the Wimbledon third round with a 7-6 (7/3), 6-7 (3/7), 6-0 victory over Bulgaria's Tsvetana Pironkova on Thursday.
World number one Maria Sharapova swept into the Wimbledon second round with a 6-2, 6-3 victory over Australia's Anastasia Rodionova on Monday.
Anna Tatishvili of Georgia upset third-seeded Tsvetana Pironkova of Bulgaria 1-6, 6-3, 6-1 Monday in the first round of the Budapest Grand Prix.
India's challenge in the singles event of the season's first Grand Slam was over in just an hour and 28 minutes as Sania Mirza went down to Bulgaria's Tsvetana Pironkova in straight sets in the first round of the Australian Open in Melbourne on Monday.