It is day four at the US Open and all the first-round matches are in the books.
Some seeded players have been sent packing, with the women's side experiencing significantly more upsets than the men. The last two Grand Slam champions on the women's side have been eliminated, and with Kim Clijsters not playing in the Open, there will be a fourth women's major champion in 2011.
For the guys, second round matches will begin on Thursday. The women will complete the second round, as the bottom half of the draw was slimmed to 16 ladies on Wednesday.
Without further adieu, here's a look at an enticing Thursday.