Without compelling rivalries, women's tennis remains, well, not all that compelling. These days, when Serena loses in Slams, it's because she beats herself. It's been a long time since she lost a big match because she was simply outplayed. Back when her biggest rival was Jennifer Capriati, that wasn't true. Now, her losses are baffling precisely because it's hard to wrap the mind around her ability to beat herself so thoroughly after all she's accomplished. While Amelie Mauresmo was a headcase, no one, not even the diminutive one, had a game so complex and beautiful at the same time. I can't name a single player today who reminds me of her. She was able to beat Serena, Venus, Henin, Davenport, Hingis, and Capriati and Clijsters at the top of their games. When she finally got over herself, she was able to win two Slams. I can't see Radwanska or Errani winning a Slam without a tremendous amount of luck. I'm sure I'm going to have to duck for saying this, but in many ways Marion Bartoli is arguably the most compelling player in the game right now.