Grigor Dimitrov was more than just unhappy after losing to two-time Grand Slam champion Andy Murray in the fourth round of the Australian Open. The No. 10 seed was up a break in the fourth set, but Murray won the last five games to seal the match, 6-4, 6-7 (5), 6-3, 7-5.

"I'm not going to hide my disappointment," the 23-year-old said. "I'm pissed. I'm happy that I competed at a good level and it takes a player like Andy to beat me like that. I'm just disappointed because it's not the result that I wanted. For sure I could have done things better, some things better."

Last season, the Bulgarian reached the semifinals of Wimbledon, where he upset Murray in the quarterfinals, and won three ATP 250 titles. But he admits that he wants more.

"Satisfaction? That's very hard to say," he said. "That's hard to say. It's also good for me to see what I did good, what I can do better next time. I think Andy played a really high level throughout the whole match."