Rafael Nadal has vowed to fight on "in a positive way" after crashing out of the 2015 US Open at the hands of Fabio Fognini.
Nadal, the 14-time Grand Slam winner, lost for the first time at a major after taking a two-set lead, with Fognini storming back to secure a 3-6 4-6 6-4 6-3 6-4 in the third round at Flushing Meadows.
The loss also means that for the first time since 2004 Nadal has not won a Grand Slam title during a calendar year, but the Spaniard, the 2013 and 2010 US Open champion, has vowed to come back strongly before the season draws to a close.
"The only thing this means is I played worse than the last ten years. That's the real thing," he told reporters.
"By the way, for me it was amazing to win ten years in a row a Grand Slam.
"You can imagine how difficult it is to make that happen. I have to accept that it was not my year and keep fighting until the end of the season to finish in a positive way."
Nadal has struggled for much of the year after injury and illness problems in 2014, losing in the quarter-finals of both the Australian Open and the French Open, before suffering a second-round defeat to Dustin Brown at Wimbledon.
Fognini, meanwhile, moves on to face another Spaniard, Feliciano Lopez, in the fourth round.