The Swiss had led by two sets to love and had a match point but collapsed late in a lengthy decider to crash out 6-2 7-6 (7-5) 5-7 4-6 11-13 in a contest that lasted more than four hours.
After that, Federer began to struggle and Anderson unloaded his swings on every shot. After dropping the first two sets, he stormed back to level the match and eventually outlasted the top seed with a 13-11 triumph in the final set.
But he seemed to answer any question about whether he'd be addled by the unfamiliar environs or Anderson's massive serve in the first 26 minutes, closing the opening set with the impeccable form he'd shown in winning his first five matches without losing a set or his serve.
Another alternative to watch Wimbledon matches featuring Roger Federer live and free is to try out the FuboTV 7-day free trial which means you can check it out without any obligation to buy. To be honest, I didn't feel mental fatigue. Not Roger Federer, certainly not the 11,393 fans who had tickets for No 1 Court and probably not Kevin Anderson, who played the match of his life. I don't know if it had something to do with the breeze, just a bad day from my side, except the first set. "I was not thinking much about what was going on in the other court", Nadal added.
But the 2018 French Open champion is on a roll and will likely continue that into the Wimbledon final.
"I don't think it would have changed if I played there a year ago".
"I was very happy that I got off to the right start of the match, was able to take control somewhat of the game".
Reaching his first grand slam final at the US Open past year, where he lost to Nadal, gave him great confidence and it was noticeable even early on that he was able to push Federer back, a rare sight, especially on grass. "I just don't know exactly how I couldn't create more opportunities once the third set came around", Federer said.
"I really hope it's an example of sticking to your dreams and keep believing in yourself". He got what he needed when he had to. There's Roger Federer and Rafael Nadal, of course, and Novak Djokovic, a third member of what was once the Big Four in men's tennis. And he had held serve 81 games in a row at the grass-court major, a streak that grew to 85 before Anderson broke him a surprising total of four times. I wouldn't call it unfinished business. "By the end I thought I did a great job". He is by far their most successful current tennis player, with Chanel Simmonds the highest-ranked woman at 316 in the WTA rankings and Lloyd Harris, at 221, the next South African on the list in the men's log.