Beaten champion Novak Djokovic admitted he was "not really 100%" during his shock Wimbledon defeat by Sam Querrey.
In one of the tournament's biggest upsets, he was beaten 7-6 (8-6) 6-1 3-6 7-6 (7-5) in a third-round match which stretched two days after rain delays.
Djokovic, seeking a calendar-year Grand Slam, appeared out of sorts but afterwards did not want to detract from his opponent's triumph.
"It's not a place and time to talk about it," he said on his performance.
The 2016 Australian and French Open champion said he was hurt by his exit, but added: "I managed to win four Grand Slams in a row over two different seasons.