Federer retains grand slam belief

World number three Roger Federer remains confident that he can add to his 17 grand slam titles.

The Swiss has not won a grand slam since Wimbledon in 2012, losing three finals since then, all to Novak Djokovic.

It was at the All England Club in 2012 that the Swiss last beat Djokovic at a grand slam, and the pair could face off in an Australian Open semi-final on Friday.

Despite this long barren run, Federer believes that he can win another grand slam.

“It’s part of the reason why I guess I’m still playing,” he said after his quarter-final victory over Tomas Berdych. “I feel like I’m competitive at the top. I can beat all the guys on tour. It’s nice now that in the last three slams that I’ve been as consistent as I have been.

“I’m playing good tennis, fun tennis for me anyway. I really enjoy being able to come to the net more like back in the day. So I’m very pleased. It would mean a lot to me [to win another slam], no doubt about it.”

Speaking of his 7-6, 6-2, 6-4 win over Berdych, Federer said that he felt clinching the first set tiebreaker was the key moment.

“The first set was tough. It was the one that took the longest, had the most importance of all the sets, in my opinion,” he explained.

“It was definitely key to the rest of the match because I think it maybe might’ve taken some energy out of Tomas. Who knows? If not physical, also mental. It’s always tough to lose the first set in best of five in a breaker in my opinion.”

Related: Federer through to last four

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