Prediction Time: 2010 WTA Tour Championships

It's prediction time again as this year's WTA Tour Championship reaches the semi-finals stage.  At this point, it's Kim Clijsters vs. Samantha Stosur in the Maroon Group and Caroline Wozniacki vs. Vera Zvonareva on the White Group.

It's a tough call at this point but I would pick Samantha Stosur vs. Vera Zvonareva.  Both Sam and Vera are riding a crest of confidence right now, and they both have the weapons to cause an upset in both their semi's.