World number three Roger Federer believes he can still add to his grand slam collection in an era dominated by Novak Djokovic.
Federer is a 17-time grand slam champion but has not won a major since 2012, with world number one Djokovic claiming five trophies in that period.
Rafael Nadal (three), Andy Murray, Stan Wawrinka (both two) and Marin Cilic (one) have also won slams as Federer watched on.
But Federer, who is preparing for his 12th Australian Open semi-final in the past 13 years, still feels capable of matching it with the best.
"It's part of the reason why I'm still playing. I feel like I'm competitive at the top. I can beat all the guys on tour," the 34-year-old told reporters after his straight-sets win over Tomas Berdych.
"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, no doubt about it."
Federer was speaking following Tuesday's 7-6 (7-4) 6-2 6-4 victory against Czech sixth seed and two-time Australian Open semi-finalist Berdych at Melbourne Park.
The Swiss great was a class above on Rod Laver Arena as he made it 12 wins in as many quarter-finals in Melbourne to earn a final-four showdown with either Djokovic or Kei Nishikori.
"I think I played well overall. Wished maybe I didn't get a break here or there. At the same time Tomas was pushing for it, he was looking for it, so clearly it can happen," Federer added.
"He's got a lot of power. He knows how to do it. So I was happy that on both occasions, first and third, I was able to react quickly. The second set, when I did have the break, I was able to roll with it.
"I think the first set was tough. It was the one that took the longest, had the most importance of all the sets, in my opinion. 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."