After winning the Australian Open last January, Serena Williams seems to be having fun lately. After recently surprising fans on a public tennis court, Serena Williams is now offering tennis lessons to Settle Seahawk's quarterback Russell Wilson and his wife Ciara.

Serena Williams recently won her 23rd grand slam title during the January 28 Australian Open Finals. The current world's No.1 women's tennis player defeated her older sister, Venus Williams, for the title.

Just recently, Serena Williams shocked two unsuspecting recreational tennis player in San Francisco as she asked them if she could play with them. Williams, who does not have her tennis shoes then, played a friendly tennis match with the two fans in her knee-high boots.

A video of the exchange is posted on Serena Williams' official Snapchat account. According to CNN, Williams approached the two fans to ask them if she could play with them just to see their reactions and, as expected, their reaction was one of shock.

After the chance encounter with the two tennis fans, Serena Williams is now offering tennis lessons to her best friend Ciara and the later's husband, Seattle Seahawks star quarterback Russell Wilson. The offer came after Ciara posted a video of her and Wilson playing tennis on her twitter page.

In the video, Ciara is seen returning some tennis balls with her forehand, while a shirtless Russel Wilson sways his tennis racket at the background. According to CBSSports, Serena Williams offered free tennis lessons to Russell Wilson and Ciara after seeing the video.

The playful exchange between Ciara and Serena Williams about the free tennis lesson offer can be seen on twitter. Ciara and Serena Williams are best of friends. Williams had to miss bridesmaid's duties during the Russell Wilson and Ciara wedding last year because she had to concentrate on winning the Wimbledon.

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