Tommy Haas had an emotional afternoon on Rod Laver Arena

"I think Haas going crazy. He speak by himself in the match. He talk, just he talk, he can't play in Australia good any more, and something like this."
Nikolay Davydenko after losing to Tommy Haas in five sets on Rod Laver Arena.

"That (talking to himself) starts happening. My eyes got watery, the shade started coming, there were pigeons flying around in the stadium. I was focusing on many other things as I sometimes can do."
Haas gives a perfectly rational explanation for his behaviour.

"I have pain here, in my famous a**e... the a**e is very, very painful."
Rafael Nadal explains his injury in graphic detail after going out to Fernando Gonzalez in straight sets.

"I just remember her dress, that's it. It was a pink dress. I just remember the colour actually."
Anna Chakvetadze on the first time she saw Maria Sharapova play tennis.

"Maria hits the ball so hard - especially in the warm-up. I thought, 'She will kill me'."
Chakvetadze admits to fearing the worst ahead of her quarter-final with Sharapova.

"I didn't see anything. I didn't even look at him." Sharapova denies being coached mid-match by her father after being given a code violation for it against Chakvetadze.

"I think the only two things that I did well today was I fought and I tried."
Kim Clijsters admits she wasn't very good in her three-set win over Martina Hingis.

"It's great playing her and everything, but I don't want to see her in the quarter-finals ever again."
Hingis, who has now lost to Clijsters in the last eight of three of the last five Grand Slams.