I believe Hampton will hang tough with Radwanska tonight. If she can hit the ball with depth and pace like she's been all tournament, she actually has a chance to beat Radwanska. It will be a tall order to beat Radwanska on her favorite surface but I really feel Hampton will make the sets very tight and possibly win a set. Radwanska has been just decent the last few weeks and not her dominating self like normal. I think Hampton will cover this +4 spread line.
Best of Luck