The world of tennis endorsements are complex and sometimes overwelming for many.  Li Na has reached the top of her sport with over 60 million people viewing her victory and now one of the top paid tennis celebrities.

Nadal is No.2 in the World and now has time for Twitter. So far so good!

We were gonna do a top 10 on the nicest looking horses , but that sounded too offensive for all of you out there. So this week: the top 10 strangest tennis player commercials.

The Arthur Ashe Kids Day, a daylong celebration of all things tennis, will feature eight celebrities this year, including Novak Djokovic, women's champion, Kim Clijsters, and crowd favourite, Rafael Nadal.

Tennis players play and.... they tweet.

The Bank of the West Classic, a tournament in the six-week-long Olympus US Open Series, began in earnest at 10:00 (PST), yesterday morning. The event, which is women-only, and has been since the inaugural match was played in 1971, will feature Grand Slam hopefuls, Serena Williams, Ana Ivanovic, and Maria Sharapova, among others.

This week's top ten list investigates the phenomenom of planking with tennis players!