Andy Murray says winning another Grand Slam will be "extremely difficult" but he will still "shoot for the stars".
The former world number one was knocked out of the US Open late on Thursday, losing in straight sets to Felix Auger-Aliassime in the second round.
Murray was playing his first Grand Slam singles tournament since a career-saving hip resurfacing operation in January 2019.
"It was hard enough when I had two normal hips," the 33-year-old said.
"So it will be difficult, but I'll keep trying - why not? Why shouldn't I try my hardest to do that?