I don't understand what Errani is thinking when she plays Sharapova. Clearly, it's a bad matchup to start with, as Errani lacks power, and Sharapova doesn't mind Errani's normal rally ball. Errani, while a great mover and great defender, should not be hanging way back trying to run back and forth and force errors. As long as Sharapova is in the middle of the court, she doesn't mind having to hit multiple shots to win the point. Sure, she'll miss sometimes, but it doesn't matter. Errani has the game to disrupt Sharapova. She can approach and she volleys well, she can slice, she can no-pace Sharapova, she can drop-shot, get Sharapova moving and uncomfortable, she can hit short angles. Would any of this lead to a win - maybe not, but she'd have a better chance than hanging back and hitting the ball back as deep as possible. Sharapova has double faulted six times and is generally playing bad, yet she's up 3-0.