Roger Federer insisted his dismal record against Rafael Nadal did not play on his mind Thursday after he crashed out of the Australian Open semi-finals at the hands of his long-time nemesis.

Federer denied his record, just two wins in 10 clashes at majors, against Nadal played on his mind when he went out on court, saying he felt the Spaniard raised his game in their meetings.

"It is what it is, you know. At the end I care about my titles, if I'm happy or not as a person," he said.

"Head-to-heads for me, I mean, are not the most important. If I beat Andre (Agassi) 10 times in a row or Lleyton (Hewitt) many times in a row, at the end of the day I don't care.

"I remember the matches on that given day, that I played well against them or not, and I don't remember the head-to-head that much."