Radek Stephanek can be proud of a hugely successful season whereby he has gone to a superb 44-19 record. He has since breaken into the top 20 of the world rankings, only nine behind the hard hitting Argentinian Del Potro. Stephanek has always been a classy player with his quick hands at the net but Del Potro on the other hand is brutal in his shots. He serves as one of the best players on tour and I do not think the Argentinian will allow his opponent today to dictate him. Stephanek's game plan will be foiled and I just cannot see how he can go pass his opponent.

Stephanek may have produced  one of his best performances of the season by beating Murray in the previous round but it can be said that the Brit is enduring a very gruelling year and he was simply in no frame of mind to compete at the highest level. This season, Del Potro's record against players in the top 20 have been nothing but steady. He beat a whole host of talented players at Canada and with Cilic or Monfils awaiting him, he will have a genuine chance of making the final. Go for Del Potro, especially with Radek's dismal record against the top guns.

Pick: Del Potro @1.85