Roger Federer is about to play Juan Martin Del Potro for the 21st time in the US Open quarters, and many memories are resurfacing.

Even if the Swiss Legend has an excellent record against Juan Martin (16-5), he lost his most important match against the Argentine at the US Open final 2009. A match that he really had to win.

Why I have lots of regrets about that final. FEDERER

During a recent interview, Roger went back to that final that he was controlling easily for the first set and half before he started to collapse. The world no.3 was in the driver seat for most of the match with Del Potro struggling (probably) with the magnitude of the occasion, but eventually, Roger let him in, and Juan Martin was great in taking full advantage of the situation.

Federer commented

“I remember we had a good breakpoint early that put me ahead, I think, in the first set. I’m not sure. I felt like that I left that match with a lot of regrets.

Probably feels like one of those matches I would like to play over again. Feel like I would probably win it somehow because I should have been up maybe two sets to love or should have been up two sets to one. I don’t remember if I was.

I just had all these chances in multiple moments. The only time when he was really better, in my opinion, was the fifth set. Obviously, that was good enough to beat me that day. It was a good match. A lot of back and forth. The crowd was really into it. Started in the day, finished in the night.

I mean, look, I was not too disappointed I don’t think because I had a great run, you know, winning I think French, Wimbledon, the birth of my girls. Making the finals here was actually a good run. But it ended my five-year reign here in New York.”

Roger will try to make up for it on Wednesday night.