Two-time Wimbledon champion Petra Kvitova was knocked out in the first round at the All England Club on a day that also saw second seed in the men’s draw Rafael Nadal, Novak Djokovic and defending women's champion Garbine Muguruza all win comfortably.

Reigning Olympic champion Chen Long exited the Badminton World Federation Indonesia Open in Jakarta at the first round stage on day one.

The International Volleyball Federation (FIVB) Men's Nations League Finals get underway tomorrow in Lille in France, with the top-six teams from the preliminary rounds going head-to-head for glory.

Nuku'alofa in Tonga has successfully hosted the first tournament on the new International Table Tennis Federation (ITTF) Oceania tour. 

The President of the British Sambo Federation, Martin Clarke, has died aged 68.

The German Olympic Sports Confederation (DOSB) has said the world of cycling is "holding their breath" after 11-time world champion Kristina Vogel suffered a serious spinal injury in a crash during training last week.

Road cycling has been added to the sports programme for the Asian Para Games in Jakarta this October, after being approved by the Asian Paralympic Committee (APC).

Turkey have risen to the top of the International Blind Sports Federation women's goalball world rankings despite losing to Russia in the final of the World Championships in Malmo in Sweden last month. 

International Olympic Committee (IOC) President Thomas Bach called for "quick and effective" action against corruption following a key meeting in Lausanne.

The Viessmann Group, one of the world's leading manufacturers of heating and refrigeration systems, has become the main sponsor for the International Ski Federation (FIS) Nordic World Ski Championships in Seefeld in Austria next year.

Tennis legend Roger Federer has said he does not think there will ever be enough drug testing in the sport.

Colombia won three more golds on day two of the Inline Speed Skating World Championships in Heerde in The Netherlands, after winning 10 medals including four golds yesterday. 

Britain's Paralympic swimming champion Ollie Hynd fhas won an appeal against his reclassification from S8 to S9 but team-mate Matt Wylie announced we would retire because he would had been moved up to a different category.

Top seed and defending champion Roger Federer has begun his 2018 Wimbledon campaign with a clear cut 6-1, 6-3, 6-4 win over Serbia’s Dušan Lajović on centre court as Serena Williams won her first match on grass since giving birth to her daughter in September.