Caroline Wozniacki DEN (1) vs. Kim Clijsters BEL (11). "Don't call it a Kimback, she's been here for years!" Defending champion Clijsters survived 4 consecutive match points against 2011 Australian open finalist Li Na and somehow, miraculously was able to gut out the middle set and (mostly) ran away with the third and deciding set to complete one of the most amazing comebacks of recent years. Wozniacki has had a pretty uneventful run to the quarterfinals and dispatched the only other former #1 player to not win a major title (#11 seed Jelena Jankovic) surprisingly easily. However, against the Big Babes of tennis The Golden Retriever has been on the losing end of frequent beat downs during her "reign" at the top of the WTA rankings and I suspect this will just be another one. Losing to Clijsters in the quarterfinal (one round earlier than she was bounced from the tournament last year) will probably result in Wozniacki's demise as World #1, which would probably be relief for her and fan of women's tennis. PREDICTION: Clijsters in 2 sets.
Victoria Azarenka BLR (3) vs. Agnieska Radwanska POL (8). Azarenka has been cutting through the draw like a hot knife through butter, dropping a mere dozen games through four rounds of Grand Slam tournament play. (Only World #1 Novak Djokovic has been more dominating, losing a gawdy 10 games through 4 rounds of best-of-5-set matches.) Radwanska is a wily player (some would call her a poor man's Martina Hingis) but Azarenka enjoys a healthy 6-3 career head-to-head advantage over the Pole, including a 5-2 lead in hard court matches. Surprisingly, Azarenka has only won one major quarterfinal in her career (despite playing in 5), while Radwanska hasn't won any of the four major quarterfinals she has appeared in. Azarenka will make it zero out of five as she reaches her second major quarterfinal, as she starts to finally live up to to her Top 4 seeding. PREDICTION: Azarenka in 2 sets.
Maria Sharapova RUS (4) vs.