The 2007 Sony Ericsson Championships begins on Tuesday, and the round-robin draw has been announced today, so let's remind ourselves of the past champions of this tournament.

1971: Billie Jean King
1972: Chris Evert
1973: Chris Evert
1974: Evonne Goolagong
1975: Chris Evert Read more »

The draw for the 2007 Sony Ericsson Championships has been announced today in Madrid. There are two groups of four players, which play in a round-robin format. The leader of the yellow group is world number one Justine Henin, while Svetlana Kuznetsova leads the red group. Read more »

I have been in contact with Miodrag Bozovic, a very committed founder and organizer of a tennis tournament for kids called Smrikva Bowl, so I decided to spread the word about this tournament and also present some possible tennis stars of the future.

Smrikva Bowl is a tournament for kids under 10 years old, located near the city of Pula, in Croatia. It was founded in 1996 and over time, it has become one of the most important tournaments of the kind. Read more »

Former world number one Martina Hingis retired from tennis on Thursday after her announcement that she tested positive for cocaine at this year's Wimbledon. The WTA Tour, however, focuses on Hingis’ great results as long as they are not certain that she is guilty.

"The WTA Tour has not received any official information… and as a result we are not in a position to comment on the matter," said CEO Larry Scott after Hingis' media conference.

Scott said the Tour had a "zero tolerance policy when it comes to doping in sport" before praising Hingis’ successful tennis career.

"With respect to her retirement announcement, Martina Hingis is a tremendous champion and a fan favourite the world over. In her most recent comeback, she proved again that she can perform at the very highest levels of the game."

"Martina will always be respected for not only having achieved the Sony Ericsson WTA Tour world number one ranking, her five Grand Slam singles titles, nine Grand Slam women's doubles titles and two Sony Ericsson Championships titles, but just as much for her incredible touch, on-court intelligence and off-court professionalism."

Former world number one Martina Hingis retires from professional tennis for the second time in her career due to a string of injuries and health-related problems. However, the shocking fact that she is accused for testing positive for cocaine will most certainly make her miss the sport less.

"The fact is that it is more and more difficult for me, physically, to keep playing at the top of the game. And frankly, accusations such as these don’t exactly provide me with motivation to even make another attempt to do so," said the 27-year-old Hingis. Read more »

Nicole Vaidisova sustained a right wrist injury in her first round match at the Bell Challenge in Quebec City, Canada. She played against Czech compatriot Renata Voracova.

Top-seeded Vaidisova won the opening set 6-2, but lost the second set 3-6. Then, she received medical treatment, but afterwards the world No. 12 just waved to the crowd and left the court.

On a website about Nicole Vaidisova, there is a short retrospection of the Czech’s injuries during the 2007 season. It looks like this:

1. Cut finger (during Hong Kong exhibition in January)
2. Wrist injury
3. Mononucleosis/viral illness (since Wimbledon quarterfinal loss until US Open – almost two-month period)
4. Left hamstring injury (since the US Open until Moscow, pulled out of Stuttgart)
5. Wrist injury (during the first round at the Bell Challenge)