The eighth-seeded Anderson needed four hours and 17 minutes to battle past the eight-time Wimbledon champion 2-6, 6-7 (5), 7-5, 6-4, 13-11 on Court 1 and will face the victor of the John Isner vs. Milos Raonic encounter in the semi-finals.
Federer was 4-0 against Anderson entering the day, winning every set they'd ever played against each other. Anderson held for 5-all, broke to 6-5 with a violent return victor off a 156kph second serve, then staved off three break points and closed the set with a 214kph ace.
Federer eventually cracked at 11-11, double-faulting to hand Anderson a break point which he converted when the eight-time champion hit a weary-looking forehand halfway up the net. Nerves and serves were severely tested in the afternoon sunshine, but Anderson, a 32-year-old who has cracked at such moments in the past, was the one who held firmest this time.
Anderson had 28 aces in the match, but he is not just a big server.
Djokovic saved three break points in the fifth game of the third and made the Japanese star pay by breaking for 4-2 and an eventual two sets to one lead.
Eyeing a ninth title at The All England Club, Federer ultimately paid the price for being unable to convert any more than three of 12 break-point chances in the four-hour, 14-minute cliffhanger on Court One. Again, I really hope it's an example of sticking to your dreams and keep believing in yourself.
Three-time Wimbledon champion Novak Djokovic got his wish to play in the main stadium, and he reached his first Grand Slam semi-final since 2016 by beating number 24 seed Kei Nishikori of Japan 6-3, 3-6, 6-2, 6-2. Federer no less than hammered Anderson to clinch the first set 6-2. "I felt I was playing better tennis, so that was motivating for me as well to keep at it", said Florida-based Anderson who is applying for U.S. citizenship.
Gaining in confidence, Anderson took care of Federer 6-4 in the fourth, setting up a do-or-die fifth set.
Tendulkar then invited Federer to "exchange notes" after the tournament's end, which the eight-time Wimbledon champion courteously accepted. He extended it to 34 against Anderson, but then the wheels began to come off. Of course, the goal is to come back here next year. Anderson is now set to face John Isner, who reached the semi-final by besting Milos Raonic on No. 1 Court.
Unsurprisingly, Anderson says his win over Federer will be one he cherishes for a long time.
Djokovic will play Nadal in the semifinals.
But he found himself in even more unfamiliar territory with an inspired Anderson's relentless, thudding serve eventually overpowering the 20-time grand slam victor.
"I don't think it really mattered, to be honest".
"Sometimes you don't feel good, and you try your best". "Just today, when I needed it, I couldn't get it up. I hopefully have two more matches to play in the tournament".