Rybarikova, at No. 87 the lowest ranked Wimbledon semifinalist since 2008, will next face Garbine Muguruza on Thursday in the semifinals.
Djokovic said he had spent around two hours with physiotherapists before his match against Berdych in an attempt to ease the problem and would now see a specialist to examine the injury.
The second set was even more straightforward as Raonic wafted a forehand wide to concede another early break before Federer's ripped backhand victor caught the line for 5-1. He also had a trainer work on his right shoulder near the end of his fourth-round victory on Tuesday. But she kept going, and with her recent successes, a championship this week would return the American to the top five in the rankings for the first time in six years.
Cilic and Querrey played at the 2012 Wimbledon tournament a match that is the second longest in tournament history.
Murray's loss and Djokovic's withdrawal means Federer is now the overwhelming favourite to secure what would be a 19th grand slam title.
But Nadal, Wimbledon victor in 2008 and 2010, is up against a tricky opponent in Luxembourg's left-handed serve and volley specialist Gilles Muller, who beat him in the second round in 2005 - the Spaniard's first loss at the tournament.
"The courts honestly are not that great this year and many players feel the same".
The main action at the All England Club has yet to start, but other matches on the outside courts are already being delayed by rain. "It's unfortunate I have to finish Wimbledon like this", said Djokovic after his first Grand Slam retirement since the 2009 Australian Open quarter-finals. In the last five matches of Adrian Mannarino, he has won four matches and lost one match in Antalya against Yuichi Sugita.
Injury took its toll on Andy Murray and Novak Djokovic as both crashed out of Wimbledon in the quarter-finals. Before Wimbledon, he skipped some practice sessions and pulled out of two exhibition matches.
The Halep-Konta match was in the third set.
Querrey, who is from the United States, is in the quarterfinals for the second consecutive year and has only beaten Murray once in eight previous meetings.
Defending champion and home favourite Andy Murray is up against Benoit Paire, the tall bearded Frenchman who seems to have finally come to terms with playing on grass.
The match on Centre Court is being played with the roof closed. Seven-time champion Roger Federer will follow against Milos Raonic, the man that beat Federer in last year's semifinals.
Djokovic said the scheduled Court 1 fixture should have been moved to Centre Court.
The Nadal-Muller match was just the latest example of lengthy overtime tennis.
The Czech 11th seed was leading by a set and a break of serve when second seed Djokovic withdrew due to an elbow injury [nL4N1K34ST].
"During the match I mentioned that there is a hole in the middle of the court, middle of the service line and he asked me to show him and I did".style="text-align: center;"