Top seed Angelique Kerber was knocked out of the last-16 of Wimbledon by Garbine Muguruza on Monday, ensuring she will lose her world number one ranking.
World No 1 Serena Williams comfortably beat 15-year-old CiCi Bellis.
The former swept past Svetlana Kuznetsova while Agassi bulldozed fellow-American Brian Vahaly in the first round of the Australian Open.
The seventh-seeded Bulgarian advanced to his eighth ATP World Tour Masters 1000 quarter-final with a 6-3, 7-5 victory over Del Potro, who struggled with the intense heat in the closing stages of the one hour, 39 minute match.
Images from Monday's action at the French Open.
Dhruv Munjal insists that women's tennis needs a golden generation, one that can make matches competitive and viewing more riveting.
PHOTOS from day four of the Wimbledon championships at the All England Lawn Tennis and Croquet Club in London on Saturday
Simona Halep became the first Romanian in 40 years to lift the French Open trophy at Roland Garros on Saturday.
Rafael Nadal's return to action came to a shuddering halt on Friday when the Spaniard was beaten by Slovakia's Martin Klizan in a late-night quarter-final duel at the China Open.
Croatian ninth seed Marin Cilic reached the Wimbledon quarter-finals for the third year running after Kei Nishikori quit with a rib injury midway through their fourth round match on Monday.
The latest tennis rankings have been announced by the ATP and WTA
Be it some scintillating action from the Australia Open or Diego Costa's strike sealing the points for Chelsea against Arsenal. In cricket, The Indian team finally tasted success on the back of strong performances from two youngsters. A sensational debut by Jasprit Bumrah followed by a match-winning century by Manish Paney. Be ready to be amazed as Rediff.com encapsulates all the sporting action from the past week in this super photo feature.
Top seeded Ash Barty overcame a slow start to defeat Maria Sharapova 6-4 6-1, while Simona Halep battled past Ekaterina Alexandrova 3-6 7-5 6-4 in the second round of the Cincinnati Masters on Wednesday.
Nadal, playing his first match since losing to Roger Federer in the Wimbledon semi-finals, fell behind 5-2 in the tiebreak before roaring back to prevail in his first career meeting with world number 53 Evans.
List of French Open women's singles champions
Images from Day 2 at the US Open played at Flushing Meadows in New York on Tuesday
US Open, the final Grand Slam of the season, starts Monday, August 28, at Flushing Meadows in New York.
Maria Sharapova has pulled out of Russia's Fed Cup semi-final against Germany in Sochi this weekend with a leg injury, the Russian Tennis Federation said on Tuesday.
A day after celebrating his 36th birthday, Federer played the aggressive game that has propelled him to five titles, including two grand slams, this year, attacking the net and rocketing second serves.
World number ones Serena Williams, aiming to complete the first calendar-year Grand Slam in 27 years, and Novak Djokovic have been named the top seeds for the US Open championships starting on Monday in New York.
IMAGES from Day 3 of the US Open in New York on Wednesday.
Images from Day 3 of the 2016 Australian Open in Melbourne, on Wednesday
Take a look at images from events that caught our attention in the week gone by.
Dominika Cibulkova kept her hopes of reaching the last four of the WTA Finals alive with a gritty 6-3, 7-6(5) Red Group victory over Simona Halep at the Singapore Indoor Stadium on Thursday.
The last time Martina Hingis appeared in the Fed Cup for Switzerland she was a 17-year-old four-times Grand Slam champion with the world at her feet.
The returning Scot also announced his withdrawal from next week's Rogers Cup in Toronto.
The 20-year-old Ostapenko was the first unseeded woman to lift the Suzanne Lenglen Cup since Britain's Margaret Scriven in 1933.
Novak Djokovic kept his juggernaut rolling at the China Open by improving to 26-0 with a 6-2, 6-1 win over local hope Zhang Ze on Thursday.
List of French Open women's singles champions
Angelique Kerber was forced to dig deep in her WTA Finals opener before the German world number one battled past Dominika Cibulkova 7-6(5), 2-6, 6-3 in a high-class baseline slugfest at the Singapore Indoor Stadium on Sunday.
Serena Williams and defending champion Maria Sharapova remained on course for a heavyweight Madrid Open final.
Reigning champions Novak Djokovic and Serena Williams have been named top seeds for the Australian Open starting on Monday.
Stan Wawrinka showed his class in both singles and doubles to lead the Singapore Slammers to victory in the International Premier Tennis League (IPTL) final in front of a delighted home crowd at the Indoor Stadium on Sunday.
Rafael Nadal extended his astonishing winning run on clay to 42 consecutive sets as he reached the semi-finals of the Barcelona Open with a 6-0, 7-5 victory over Slovakia's Martin Klizan on Friday. The defending champion will face David Goffin on Saturday after the Belgian beat Spaniard Roberto Bautista 6-7(3), 6-2, 6-2.
Ankita also shrugged off poor umpiring to emerge a 6-3, 1-6, 6-4 winner in two hours and 25 minutes against a player, who was ranked as high as 27 last year and had beaten top-10 players.
Novak Djokovic and Serena Williams are top seeds at the major starting Monday
Former world number one Novak Djokovic suffered a surprise second-round exit at the Barcelona Open when the Serb was beaten 6-2, 1-6, 6-3 by world number 140 Martin Klizan on Wednesday.
Tournament favourite Novak Djokovic beat Finnish veteran Jarkko Nieminen 6-2, 7-5, 6-2 on Tuesday, kicking off his quest for a first ever Paris trophy to add to his eight other Grand Slams.
The absence of expectant mother Serena Williams and a failure by any of the other top women to produce the kind of dominance the American seven-times champion has consistently delivered makes this year's Wimbledon the most open in years.
Serbia's Novak Djokovic is the top seed in the men's draw which includes five-times US Open champion and 17-times Grand Slam winner Roger Federer as seventh seed - his first time the Swiss has been placed outside the top three in a Grand Slam in over ten years.