If he does beat Marin Cilic today, Federer will become the eldest Wimbledon champion in the Open Era.
So how long can Roger Federer go on?
The Swiss is showing no signs whatsoever of slowing down. Only once has he won a Grand Slam title without dropping a set and now has the opportunity of doing that again.
If he does, it would be just the second time in the Open Era that that has happend. Bjorn Borg did just that in 1976. That's some effort, given he's now halfway to 70.
Today will be his 102nd match at Wimbledon – tying Jimmy Connors' record for most matches played at Wimbledon in the Open era.
He reached his first Grand Slam title back in 2003, here at Wimbledon, where he beat Mark Philippoussis. It says it all that today Philippoussis will be on Court One, in the veteran's invitational doubles, while Federer is still playing at the peak of his game.
When will Roger Federer retire?
He hasn't set a date on when exactly he will go but he has previously alluded to possibly playing in the 2020 Olympics.
The decision, he says, depends on three factors.
- His health and whether he can stay injury-free
- How long wife Mirka and his family are happy to continue to jet across the world
- Whether he's still competing at the top echelons of the sport.
Wimbledon winners through the years Tue, June 27, 2017
Wimbledon 2017 is just around the corner, so we're taking a look back at all those who've won the tournament over the years.
Play slideshow Getty 1 of 49
2016 – Serena Williams and Andy Murray
What has Roger Federer said about retiring?
"Health has definitely a role to play in my decision-making, no doubt about it. As I move forward, I'll be very cautious of how much I will play, how much I think is healthy.
"Then, of course, it's just discussions I always have, continuous discussion, with my wife about the family, about my kids, is everybody happy on tour, are we happy to pack up and go on tour for five, six, seven weeks. Are we willing to do that.
"For the time being, it seems like absolutely no problem, which is wonderful. Then success to some extent also is key for keeping — staying out there really. This tournament, again, helps me to stay hopefully on tour longer, to be honest.
"But I haven't made any decisions moving forward, how far, am I looking at the Tokyo Olympics or anything like that. I haven't.
"Since the injury, honestly everything has been very much reset, that I just go sort of I'm planning till the end of the year, then I know what I'm going to play at the beginning of next year, so forth.
"Maybe I think a year ahead, but it's just important to stay on track with the plan."