While the Nikolay Davydenko and Fernando Verdasco, the top two seeds on the men's side, are still in contention for the Pilot Pen Tennis tournament, their fellow seeds have not been as fortunate.

Fourth-seeded David Ferrer pulled out before the tournament started and heading into the third round on Wednesday, six other seeds are done. Third-seeded Tommy Robredo and No. 5 Mardy Fish were the biggest names sent packing as they lost to Jose Acasuso and Rajeev Ram respectively.

While the anticipated quarterfinal match between Davydenko and No. 6 seed Sam Querrey is still a possibility on Thursday and all four seeds are still around in Verdasco's portion of the bracket, the other two sections have been hit hard by upsets and surprising results.

No. 14 seed Igor Kunitsyn and unseeded players Acasuso, Florent Serra and Ram will be fighting it out for a semifinal berth. With Serra and Ram playing each other while Simone Bolelli and Leonardo Mayer also squaring off, there will be a minimum of two unseeded quarterfinalists. No. 7 seed Igor Andreev and qualifier Frederico Gil are also in that portion of the draw.