Simona Halep lost her chance to go on a court she likened to "a very nice hotel" after she checked out of Wimbledon early following a shock 5-7, 6-4, 6-3 defeat by 106th-ranked Slovakian Jana Cepelova.
Michaella Krajicek's joy at winning on home grass was easily surpassed when her boyfriend stepped on court and dropped down on one knee straight after her Den Bosch Open first-round victory on Monday.
Top-ranked Serena Williams suffered a shock 6-4, 6-4 loss to Slovakia's world number 78 Jana Cepelova in the second round of the Family Circle Cup on Tuesday.
India's leading doubles players Rohan Bopanna and Sania Mirza began their US Open campaigns with victories in their respective events.
Top seed Caroline Wozniacki and former World No 1 Venus Williams ensured Auckland Classic organisers' dream final remained on track with the duo both recording comfortable victories in their first round matches on Tuesday.
Former Australian Open champion Victoria Azarenka began her warm-up to the first Grand Slam of the year in convincing fashion with a 6-2,6-0 win over Russian Elena Vesnina in their first round match at the Brisbane International on Monday.
Wimbledon women's champion Garbine Muguruza says she will savour her victory in order to prevent a similar slump in form to the one she suffered after winning the French Open in 2016.
In the women's draw, defending champion Garbine Muguruza will play 2010 French Open winner Francesca Schiavone
Five things to watch out for at the French Open on Tuesday.
Twice Shanghai Masters champion Roger Federer was far from his best against Spain's Roberto Bautista Agut but did enough to reach the quarter-finals with a 6-3, 2-6, 6-4 win on Thursday.
2014 Wimbledon finalist Eugenie eliminated in 1st round.
Fifth seed Maria Sharapova averted an early exit on a sweltering day in Flushing Meadows. Updates from Wednesday's play.
Second seed Garbine Muguruza, bidding to add the Wimbledon crown to her French Open title, was sensationally beaten in the second round on Thursday by Slovakian qualifier Jana Cepelova 6-3, 6-2 in the shock of the tournament so far.
Federer, who skipped the entire clay court season after winning the Australian Open and claiming titles at Indian Wells and Miami this year, will next play defending champion Florian Mayer who beat Frenchman Lucas Pouille in three sets.