Rafael Nadal easily avoided the embarrassment of a back-to-back first round exits at the Australian Open on Tuesday, ramping up his serve and rattling off 39 winners to beat Florian Mayer 6-3, 6-4, 6-1 on Rod Laver Arena.
Top seed Andy Murray could meet Roger Federer or Kei Nishikori in the third round, while Serena faces tricky Belinda Bencic in opening round
Venus Williams got off to a flying start in her return from a two-month layoff but her game quickly fell apart as the seven-time Grand Slam champion slumped to a 0-6, 6-4, 6-2 loss to Kirsten Flipkens in the Rogers Cup first round on Tuesday.
Novak Djokovic brushed past France's Adrian Mannarino 6-4 6-3 7-6(5) on Wednesday to book his place in the third round of Wimbledon. The defending champion, aiming for his third consecutive title, played well within himself and was rarely troubled during the second-round match. Mannarino, ranked 55, put up spirited resistance in the third set to force a tiebreak but was ultimately swept off Centre Court by the Serbian's laser-guided ground-strokes.
Top seed Agnieszka Radwanska's title defence at the Sydney International lasted just 92 minutes when she was dumped out of the second round by Bethanie Mattek-Sands on Tuesday.
The first week of Wimbledon is over and the tournament has been full of surprises. The grudge match between Nick Kyrgios and Rafael Nadal and the rise of the phenom that is Cori 'Coco' Gauff have been the shining moments at this year's tournament.
Wimbledon champion Garbine Muguruza notched up her first ever victory on Arthur Ashe Stadium with a 6-0, 6-3 win over American Varvara Lepchenko at the US Open on Monday.
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.
Defending champion Andy Murray eased into the Wimbledon quarter-finals for the 10th successive year with a 7-6(1), 6-4, 6-4 victory over Benoit Paire on Monday.