The U.S. Open has been whittled down to the legitimate contenders for the trophy and for most fans, the tournament begins now.
A lot of pretenders were exposed in the early rounds and sent packing.
One player who made an unexpectedly early exit was world No. 1, Roger Federer, as he was ousted in his quarterfinal match Wednesday night against Tomas Berdych.
Here are five great reasons to stay tuned to Thursday's quarterfinal action.