Fernando Verdasco sent shockwaves through the Australian Open on Tuesday by defeating Rafael Nadal 7-6(6), 4-6, 3-6, 7-6(4), 6-2 to send the former world number one crashing out in the opening round.
Check out some of the up-and-comers who could cause an upset at Wimbledon this year.
The winners of the season's first three grand slams Novak Djokovic, Andy Murray and Rafa Nadal put on a masterclass at the Western and Southern Open on Wednesday, strolling into the third round with straight sets wins.
Angelique Kerber, who will reclaim the world number one ranking on Monday, breezed to a 6-2, 6-1 second-round victory over fellow German Andrea Petkovic at the BNP Paribas Open on Saturday.
Roger Federer claimed one of the few titles to have previously eluded him after he overcame a sluggish start to beat injured Frenchman Gilles Simon in the Shanghai Masters final on Sunday.
Welspun India Ltd bought British towel manufacturer Christy in 2006. And since then they have been manufacturing all the towels for the tournament at their facility in Vapi, Gujarat.
Defending champion Serena Williams is the top seed in the women's draw. The American will be looking to equal Steffi Graf's Open era record by sealing a 22nd Grand Slam triumph.
Under the lights on the stadium court, Williams smashed 39 winners to defeat Azarenka 7-5, 6-3 in a rematch of the 2016 final, which the Belarusian won.
Photos from the ATP World Tour Finals matches played in London on Monday
It was a day of surprises at Flushing Meadows in New York as seeded players were knocked out one after the other on Friday.
Novak Djokovic, Andy Murray, Rafael Nadal and Roger Federer all picked up third round wins at the Western and Southern Open on Thursday to set up a star-studded last eight in Cincinnati.
A profligate Yuki Bhambri missed chances galore in a tame defeat against world number 40 Jiri Vesley as India lost the Davis Cup World Group Play-off tie against top seeds Czech Republic 1-3.
Rafael Nadal slumped to one of his worst defeats in a clay final on Sunday but said his week in Madrid had been positive despite losing his Masters crown to Andy Murray in a crushing 6-3, 6-2 reverse.
Leonardo Mayer beat Joao Souza in a Davis Cup singles match that lasted a record six hours and 42 minutes.
Roger Federer and Maria Sharapova glittered under the Rod Laver Arena lights on Monday, restoring order at the Australian Open after eight women's seeds crashed out in the afternoon sun on a manic opening day. The evergreen Federer strolled into the second round with a classy 6-4, 6-2, 7-5 win over Taiwan's Lu Yen-Hsun before fellow-second seed Sharapova ruined Croatian qualifier Petra Martic's 24th birthday with a 6-4, 6-1 victory.
Six-time champion Roger Federer survived a late-night Swiss semi-final thriller against Stanislas Wawrinka on Saturday to set up an ATP World Tour Finals showdown against Novak Djokovic.
Roger Federer kept up his hopes of finishing the year as World No 1 when he downed Frenchman Jeremy Chardy 7-6(5), 6-7(5), 6-4 in the second round of the Paris Masters on Wednesday.
The Big Four were always going to come into the year's first Grand Slam knowing fully well that their days of dominance are drawing to a close, if not already a thing of the past, says Dhruv Munjal.
A round-up of results from Davis Cup matches played on and Sunday
India's Leander Paes and his German partner Alexander Zverev went down to the Spanish duo of Feliciano Lopez and Marc Lopez in a men's doubles first round match to bow out of the Cincinnati Open.
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.
Earlier on Wednesday, Czech Karolina Pliskova was forced to withdraw from the tournament due to a viral illness.
The evening start for the Davis Cup tie against Spain has caught the Indian team by surprise with captain Anand Amritraj calling it an 'unfortunate' decision that has compromised the country's home advantage.
Roger Federer suffered a shock 3-6, 6-3, 7-6(4) defeat to Australian wildcard Thanasi Kokkinakis on Saturday that will cost the Swiss his world number one ranking and leaves the Miami men's tournament wide open.
IMAGES from the PNB Paribas Open played at Indian Wells in California on Monday
The Danish World No 3 ended 2017 with the biggest title of her career in Singapore and returned a day after thrashing Madison Brengle in her season opener to hit 21 winners against eight unforced errors in the 53-minute win over Martic.
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.
The Serena Williams show continued at the US Open as the world number one moved a step closer to a calendar Grand Slam on Wednesday, while Mardy Fish took a final Flushing Meadows bow as the curtain came down on the American's career.
Stanislas Wawrinka started the run at last year's US Open, followed by a 35-year-old Federer at Melbourne Park and Rafael Nadal in Paris.
An air of calm descended at Wimbledon on 'Tranquil Thursday' as Novak Djokovic and Serena Williams avoided the trail of destruction that had decimated the field at the All England Club on day three of the grasscourt major.
Photos of Day 5 of the Australian Open being played in Melbourne
Third seed Rafael Nadal battled through mid-match cramps for more than an hour before he lurched into the third round of the Australian Open with a 6-2, 3-6, 6-7(2), 6-3, 7-5 victory over American qualifier Tim Smyzcek.
A round-up of results from Davis Cup matches played on Saturday and Sunday
A ruthless Sorana Cirstea took full advantage of Karolina Pliskova's patchy form at the China Open on Thursday, reaching the quarter-finals as she consigned the recently dethroned world number one to a 6-1, 7-5 defeat.
Images from the 2022 Wimbledon Championships at the All England Club in London on Sunday.
The recall of a crushing loss might not have the same attraction as the memory of an inspired victory for most top tennis players, but World No 8 Stanislas Wawrinka wears failure as a badge of honour stamped permanently on his arm.
Images from matches played on Day 4 of the Australian Open at Melbourne Park on Thursday
A misfiring Rafael Nadal had trouble hitting the mark but the third seeded Spaniard still had enough to beat American Donald Young 6-4, 6-2 on Tuesday and advance to the fourth round of the BNP Paribas Open.
Images from all the action on Day 3 at the Australian Open in Melbourne on Wednesday
'If one thing seemed clear in this week of very uneven tennis in Melbourne though, the much celebrated golden age of tennis may be over.'