As we've seen in tennis frustration can be a bitter sweet thing. It can help motivate players to win, or it can make them implode and lose a match. Zvonareva understandably, was frustrated because she had the chance to defeat Flavia Pennetta in two sets but then fell short of meeting that goal as Pennetta took the set to split. The real kicker for Zvonareva was the fact that she had her knees heavily taped. Once the tape began to come off she asked for another medical timeout, the umpire would not let her do so which ingnited her anger. This is the part in tennis that you never want to have happen to you: your emotions make you implode. In the third set Zvonareva began to become very frustrated with herself and her sports tape so she began ripping it off, in the process throwing her racquet and calling out the umpire. This not only signals to your opponent that you're upset with yourself that you're losing, but that you should take advantage of the opportunity. Pennetta did so and swiftly beat Zvonareva, although she did put up a fight. This is just one example of why frustration can make or break your game.