Federer was the overwhelming favourite to win that match but Berdych prevailed 6-4 3-6 6-1 6-4, and he will need to produce a similar upset if he is to make this year's final, where either Querrey or Marin Cilic await.
With his scheduling problem now out of the way and a three-set match in the books, Djokovic can turn his focus to Berdych. "That's it. There's no one there to come and save you".
NOVAK Djokovic will play a Wimbledon quarter final today still seething at the All England Club schedulers for forcing him to play back-to-back days as he bids to win back his SW19 title. We respect the players' views. The 31-year-old Czech will play Roger Federer for a place in Sunday's final. When he finally won the set, he turned to his coaches, Andre Agassi and Mario Ancic, and yelled loudly, nearly as if to exhort them as much as himself. He received some treatment but looked far worse in the second set, rolling in first serves at 92mph. His next opponent was Adam Pavlasek, ranked 136th in the world. In between, Muller had to fight off a break point in the 13th game and 4 more in the 19th.
Adrian Mannarino of France, who upset his countryman Gael Monfils in the third round, looked a unsafe foe.
In a dominant match, Djokovic was broken only once in the second set but he instead broke the Frenchman early in the third set. Unfortunately today was the worst day. He was able however to cruise past his old rival David Ferrer in straight sets, before facing his toughest test yet in the shape of 8th seed Dominic Thiem.
The Serbian tennis star is citing his elbow as the issue. Novak has to play back-to-back matches, while Berdych had Tuesday off. Either way, I'm still siding with Novak because of the massive head to head advantage. And now, for the third match in a row, Williams beat a player who was born in 1997 - after she made her Grand Slam debut that year. Hitting for placement rather than power on serve, Djokovic netted a stretch forehand volley. "There was plenty of time, and it would have given Djokovic equal rest".
Serving with authority, Berdych won 21 of 23 points played on his first serve and did not face a break point in the opening set that stayed on serve throughout. In a way, Berdych is the key. "I said, "just give it a shot, go 100 percent", and it's a great feeling to be winning that match", added Muller whose only other win over the great Spaniard also came at Wimbledon, 12 years ago.
"We'll see on the shoulder".
Form and history are both on Djokovic's side. I was able to perform up to this stage. I don't think much can be done and what can be done.