The US Open quarter-final between Novak Djokovic and John Millman ground to an astonishing halt at 2-2 in the second set Wednesday when the umpire gave Millman permission to leave the court to change his sweat-soaked clothes.
A break in play of six and a half minutes saw 13-time Grand Slam champion Djokovic remain on the court as Australia's Millman -- who apologized profusely to Djokovic -- disappeared.
"I could do with a rest," said Djokovic.
Djokovic used the break to send a ballboy over to his box in the stands seeking to get some tablets he said his wife had brought to the tournament for him but which had somehow not made it into the bag he took on court.
When play resumed, Millman held serve for a 3-2 lead in the second set -- then they both sat down for the changeover.
Wimbledon champion Djokovic won the first set 6-3 over the 55th-ranked Millman, who reached the quarters with a shock win over five-time champion Roger Federer.