Tendulkar, the former India captain widely renowned as one of the greatest batsmen of all time, was impressed by Federer's form after the 20-time Grand Slam champion was spotted praticising his forward defence during his victory over Adrian Mannarino at Wimbledon.
Anderson will now move into his first semi-finals at the tournament; taking on the victor of John Isner and Milos Raonic for a place in a final against what may be Rafa Nadal or Novak Djokovic. That's followed by a preview and prediction for each of the matches.
The friendly rivalry between Nadal and Djokovic has been remarkably even over the years. A victory by the No. 2 seed Friday would level their head-to-head series at 52 wins apiece.
"The losses hurt more, you don't want to be on the loser's side", he said.
"Of course this is an important result for me", Nadal said after the match. "My goal is to play very well".
When Wimbledon got underway July 2, tennis fans of all loyalties seemed united in rooting for one pairing in Sunday's men's final: a reprise of the 2008 clash between Federer and Nadal, which produced what many believe is the greatest match in tennis history. However, when Anderson and Isner face off, there will be plenty of aces and quick points. It's going to create a small margin for error for both players, which should create a different kind of drama than the other semi.
Federer, aiming for a record-extending ninth Wimbledon title, settled for a tie-break which he took 7-5 - his 300th set overall at the Championships.
Federer couldn't convert a break point at 3-4 and as the final set headed into extra time a lone voice in the crowd, mindful of England's imminent World Cup semi-final against Croatia, shouted out "Hurry up I need to watch the football".
"I really tried my best to keep fighting", Anderson, 32, told the BBC immediately after coming off court from the 4-hour, 14-minute match. "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 United States citizenship. There's hopefully two more matches still to be played. I wasn't too concerned.
Although Isner has always featured one of the ATP Tour's top serves and a wicked forehand, his lack of other weapons, especially defensively, has caused him to struggle in the sport's biggest stages. He was, after all, the runner-up at last year's US Open. Flying under the radar, he saw off Norbert Gombos, Andreas Seppi, Philipp Kohlschreiber and Gael Monfils en route to the quarterfinals, dropping just two sets in the process.
But I also have a feeling, it was a feeling of mine, you know, not getting it right.' About Anderson's performance, Federer said he was not surprised: 'He's got a nice, big serve that he can rely heavily on.