Marin Cilic struggled early before finding his rhythm as the top seed ground out a 4-6, 6-2, 6-3 victory over friend and Croatian compatriot Ivan Dodig in the first round of the Memphis International on Monday.
Fourth seed Nikolay Davydenko overcame an early fright to beat France's Florent Serra 6-7, 6-4, 6-1 on Tuesday in an error-strewn first-round battle at the Dubai Championships.
Two-time champion Marin Cilic of Croatia kept his hopes alive, coming from behind to beat Sergiy Stakhovsky of Ukraine 4-6, 6-2, 6-2 and make the quarter-finals of the Aircel Chennai Open ATP tennis tournament, in Chennai, on Thursday.
Defending champion and second seed Marin Cilic led a procession of seeds into the semi-finals of the Chennai Open on Friday, a day marred by incessant rain and the subsequent delay in matches. Cilic beat Colombian Santiago Giraldo 7-6 (3), 6-1 in the day's final singles quarter-final to set up a last four meeting with the in-form fourth seed Janko Tipsarevic, the Serbian managing to eventually brush aside the challenge of Dutch rookie, Thiemo De Bakker, 7-5, 7-5.
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.
Making a stupendous start to the fresh season, Ramkumar Ramanathan scalped higher-ranked Roberto Carballes Baena to set up a second round clash with tournament-favourite Marin Cilic at the inaugural Tata Open Maharashtra, in Pune.
Spaniard Fernando Verdasco overcame a sluggish start to beat Marin Cilic 3-6, 6-2, 6-3 at the Paris Masters on Monday and set up a second round meeting with Tomas Berdych.
Images from matches played on Day 7 at the Australian Open in Melbourne Park on Sunday
'Goran had quite a big influence on me to change my mentality and focus on my game. He changed my serve, I started to get aggressive and that is what I needed in my career'
Third seed Tomas Berdych ended his long title drought with a clinical, 3-6, 6-4, 6-1 victory over Croatian Marin Cilic on a smoggy final day at the China Open tennis on Sunday.
The 20-year-old German, ranked three in the world, was hot and cold against Croatia's Marin Cilic but, when it mattered most, he produced his best tennis to win 6-4, 3-6, 6-4.
PHOTOS from day seven of the Wimbledon championships at the All England Lawn Tennis in London on Wednesday
In Chennai again to defend his title, the second-seeded Cilic talks about his career, his relationship with coach Bob Brett and the path to Grand Slam glory.
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.
Top seed Marin Cilic stayed on course for a third ATP title this year with a comfortable victory over Spain's Feliciano Lopez in their Vienna Open quarter-final on Friday.
IMAGES from matches played at the Miami Masters in Key Biscayne, Florida
Marin Cilic completed a dream week by steering Croatia into the Davis Cup World Group on Sunday but Spain found themselves out in the wilderness after crashing to defeat in Brazil.
Second seed Novak Djokovic beat error-prone Croatian Marin Cilic 6-2 7-6 in a rain-interrupted final to win his third title of the season at the China Open on Sunday.
Big-serving Canadian Milos Raonic fired 19 aces to topple Sam Querrey 6-4, 6-4 and set up a second-round clash with either Dan Evans or Russian 10th seed Andrey Rublev.
Second seed Novak Djokovic tackles Croatia's Marin Cilic in the third round of the French Open on Friday as his attempt to win the only grand slam title to elude him gathers pace.
Cilic's booming serve lacked its usual accuracy and Germany's Kohlschreiber was able to control long rallies, pushing the towering Croatian around the court with pinpoint groundstrokes en route to a quick victory.
Tomas Berdych stands between Marin Cilic and a third straight Chennai Open title even as the 16th edition of the tennis tournament gets underway on Monday.
Second seed Angelique Kerber stayed on track in her quest to unseat Serena Williams as world number one by beating Mirjana Lucic-Baroni of Croatia 6-2, 7-6(7) on Wednesday to reach the third round of the US Open.
Sizzling hot Andy Murray roared into his seventh successive final with a commanding victory over Canadian Milos Raonic at the Western & Southern Open in Cincinnati on Saturday.
IMAGES from the matches played on Day 4 of the Wimbledon Lawn Tennis Championships at All England Lawn Tennis and Croquet Club on Thursday
Images from all the action on Day 3 at the Australian Open in Melbourne on Wednesday
How the winners celebrated on Day 11 of the French Open.
Eighth seed Casper Ruud rallied from a set down to beat an error-prone Marin Cilic 3-6, 6-4, 6-2, 6-2 on Friday to become the first Norwegian man to reach a Grand Slam singles final and set up a French Open title clash against 13-time champion Rafael Nadal.
Marin Cilic can now secure Croatia's place in Friday's semi-final against Australia with a victory over Pablo Carreno Busta in the day's second singles match.
Australia beat Croatia 2-1 on Friday in Malaga, Spain, to reach the Davis Cup final for the first time in 19 years and will next face either Canada or Italy.
Zverev will have a chance to spoil the birthday party for Nadal, who turns 36 on Friday
Sweden's Elias Ymer replaced Berrettini in the men's draw, organisers said.
Serena Williams and Marin Cilic both survived third round scares on Friday to keep their US Open title defences on track but there was no escape for Rafael Nadal with the twice-winner going down in a late night thriller.
US Open champions Marin Cilic and Serena Williams kicked off their China Open campaigns with straight sets victories against battling underdogs on Monday, but Rafael Nadal suffered defeat in a rare doubles outing on his return from injury.
Italy's Matteo Berrettini reached his fourth consecutive grasscourt final as he overpowered unseeded Dutchman Botic van de Zandschulp at the Queen's Club Championship on Saturday.
IMAGES from Day 9 of the French Open at Roland Garros in Paris on Monday.
A summary of Saturday's action at the US Open.
10 Interesting Glimpses from the French Open.
Norwegian Casper Rudd is the first tennis player from his country to reach the final of any Grand Slam.
Galan will play either Canadian Denis Shapovalov or American Brandon Nakashima for a place in the fourth round.