Stanislas Wawrinka had to dig deep to beat Borna Coric at the Western & Southern Open in Cincinnati on Wednesday and conceded his thoughts had been far from tennis over the past few days.
The Swiss squandered seven set points in the opener and although he took the second on a tiebreak he capitulated in the decider after dropping serve at 1-2, losing 7-5, 6-7(3), 6-1.
Images from all the action on Day 3 at the Australian Open in Melbourne on Wednesday
US Open champion Marin Cilic made a shock first-round exit from the Shanghai Masters on Monday after losing 7-5, 2-6, 7-6(2) to fellow Croatian Ivo Karlovic.
IMAGES from the matches played at the Miami Masters on Sunday
The unseeded Indo-Canadian pair defeated their fancied rivals 6-3, 3-6, 10-5 in a round of 16 tie of the ATP Masters 1000 event.
Images from the action on Day 2 at the Australian Open.
Novak Djokovic, Petra Kvitova and Andy Murray were among the top players who eased into the last 16 of the French Open on Saturday.
World number one Novak Djokovic extended his winning run in Asia when he strolled into the last-16 of the Shanghai Masters.
Big-serving Canadian Milos Raonic made a strong return to competition on Friday by beating Viktor Troicki 6-3, 7-5 to reach the third round of the Miami Open.
From potential dark horses to former champions, here are the players who were knocked out of the Australian Open on Thursday
World number five Alexander Zverev continued his poor recent form as he crashed out of the Italian Open in the second round while Serena Williams had to pull out of the women's draw with a recurring knee injury.
Unseeded Novak Djokovic was given some trouble by Jeremy Chardy in the opening set but prevailed 7-6(5), 6-4 to take his record over the Frenchman to 11-0 and 26-0 in sets.
A summary of the action on Day 3 at the US Open.
India's Rohan Bopanna and his Romanian partner Florin Mergea entered the Sydney International final after a straight sets win over Thomaz Bellucci and Leonardo Mayer, on Friday.
The 32-year-old, five-times a winner of the singles at the prestigious Wimbledon warm-up event, delighted a large evening centre court crowd with some fluent shot-making as he and Spanish veteran Lopez beat top seeds Juan Sebastian Cabal and Robert Farah 7-6(5), 6-3.
It was Kristyna's first win over a top-five ranked player and she will go on to play fellow Czech Barbora Strycova in the quarter-finals.
Rafa Nadal got his usual confidence boost from Nicolas Almagro at Roland Garros, reaching the third round with a 6-4, 6-3, 6-1 victory -- his fourth without dropping a set against his Spanish compatriot on the Paris clay.
Former world number one Garbine Muguruza was beaten 7-5, 6-4 by Aryna Sabalenka in the China Open second round on Tuesday while an ailing Jelena Ostapenko lost 6-0, 6-0 to Wang Qiang.
A summary of sports events and sports persons, who made news on Wednesday.
World No 55 Haase improved to a 2-2 career record against Zverev, including victories in their last two meetings.
The 16-times Grand Slam champion, who has been slightly ill lately, was kept on his toes before racing to victory to set up a meeting with seventh seed Stefanos Tsitsipas.
IMAGES from Day 4 of the Australian Open in Melbourne, on Thursday.
Images from Day 3 of the French Open in Paris on Tuesday
Thursday's match was just Venus Williams's seventh of the year and first since January's Australian Open, where she fell to Simona Halep in the round of 32.
Defending champion Stan Wawrinka avoided a repeat on Wednesday of his first-round scare, though he was still made to work hard in a straight-sets win over Japan's Taro Daniel. The Swiss third seed won 7-6(7) 6-3 6-4 and is now on a six-match winning streak on clay, having warmed-up for Roland Garros by winning the title in Geneva last week. Progress was by no means straightforward against a skilful opponent ranked 93rd in the world and Wawrinka has yet to switch to his A game. But he says it's there when he needs it. "If you look at the first two matches, for sure I'm not playing my best tennis, but I know I have my best tennis in me," the 31-year-old Wawrinka, playing in his 45th consecutive grand slam tournament, told reporters.
Images from Day 1 of the Australian Open, in Melbourne, on Monday.
Cilic marches past Querrey into Queen's semis
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.
Images from matches played on Day 4 of the Australian Open at Melbourne Park on Thursday
Photos from matches on Day 2 at the Australian Open on Tuesday
India's Leander Paes and Rohan Bopanna crashed out of the Japan Open following a straight set defeat against Ivan Dodig and Marcelo Melo, in Tokyo on Thursday.
IMAGES from Day 3 of the US Open in New York on Wednesday.