Serena Williams, Venus Williams, Kim Clijsters and Svetlana Kuznetsova will play the 2010 BNP Paribas Showdown for the Billie Jean King Cup.

The $1.2 million tennis exhibition will take place on March 1, 2010 at Madison Square Garden in New York City. There will be two one-set semifinals, followed by a best-of-three-set final.

Last year's participants at the event were the Williams sisters and Serbs Ana Ivanovic and Jelena Jankovic. Serena was the winner.

Tickets will go on sale December 2, 2009 and range from $25 to $1000. (source: Simply Serena Williams)

Venus Williams and Maria Sharapova will welcome the New Year by playing an exhibition in Thailand on January 2, 2010.

The exhibition event is called the Hua Hin Centennial Invitation, as it will celebrate the 100th anniversary of the beach resort.

After the encounter in singles, Williams and Sharapova will play mixed doubles with local starts Paradorn Srichaphan and Danai Udomchoke.

Additional info: Sharapova will celebrate New Year’s Eve at the new InterContinental Resort. (source: Tennis Week, photos: Colleen, Ralf Reinecke)

Serena Williams defeated defending champion Venus Williams to win the Sony Ericsson Championships – Doha 2009.

Serena beat her older sister Venus for the second time at this year’s Championships and faced no break points en route to a 6-2 7-6(4) victory in the season finale. The match was not spectacular, as most of the meetings of the Williams sisters are. Both players had heavy strapping on their left legs, which was just the appropriate ending to the injury plagued tournament.

Serena, who will end the season ranked No.1, earned $1.55 million in Doha after finishing the tournament undefeated. (photo via Sony Ericsson WTA Tour)

The Williams sisters saw off their semifinal opponents to reach the final of the $4,550,000 Sony Ericsson Championships – Doha 2009.

Jelena Jankovic entered the semifinals more due to luck than anything else. She lost the matches she played against healthy opponents, and won two thanks to injured Dinara Safina and Caroline Wozniacki. Today she won the first set but eventually lost to defending champion Venus Williams 5-7 6-3 6-4, who has thus moved to the finals.

Venus will next play sister Serena Williams, who had a 6-4 0-1 retirement victory when Caroline Wozniacki pulled out with a left abdominal strain after just 45 minutes of play. It is yet another unfortunate injury for Wozniacki this week, who had been troubled by a leg injury throughout the tournament.

Serena leads an all-time record against Venus 12-10, and is coming into the encounter with three successive victories over her sister, including the extremely tight one here in Doha a few days ago. (photo via Sony Ericsson WTA Tour)

Jelena Jankovic had a very easy route to the semifinals of the Sony Ericsson Championships. After falling to Victoria Azarenka in her first round-robin match, the Serb won her second round-robin match with Dinara Safina retiring after just 12 minutes of play, and today her opponent was weary Caroline Wozniacki, who practically barely survived her yesterday’s match.

Prior to the encounter with Wozniacki, Jankovic had spent just 95 minutes on court, while the Dane spent five hours and 48 minutes. Jankovic beat Wozniacki 6-2 6-2. However, Wozniacki could  advance to the semifinals too, if Victoria Azarenka loses to Agnieszka Radwanska in the match which is currently in progress.

In the other match of the day, Svetlana Kuznetsova beat fellow Russian Elena Dementieva 6-3 6-2, and has thus sent Venus Williams into the semifinals.

The third secured semifinalist is Serena Williams, who has earned a perfect 3-0 result at this year’s Championships.

To sum up: Maroon Group semifinalists are Venus and Serena Williams and White Group semifinalists are Jelena Jankovic and Caroline Wozniacki/Victoria Azarenka. (photo: Ralf Reinecke)