Nick Kyrgios has been fined almost $40,000 after storming off the court at the Shanghai Masters.
The Australian picked up his bag and walked off after losing the first set 7-6 (7-5) in a tiebreaker to Steve Johnson.
He took to Twitter to apologise following the opening match, citing a stomach bug for the walk-off.
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“Guys, I want to apologise to the fans in Shanghai and those that watched around the world on TV today,” he wrote.
“I’ve been battling a stomach bug for 24 hours and I tried to be ready but I was really struggling on the court today which I think was pretty evident from the first point.
“My shoulder started to hurt in the practice today which didn’t help either and once I lost the first set i was just not strong enough to continue because I have not eaten much in the past 24 hours.
“I’m gutted to be honest as I was keen to keep the good momentum that I built in Beijing going and finish the year strong.
“I’ll do what I can to make sure I do.”
However, the 22-year-old was caught by TV cameras telling his courtside box that he would quit after the first set over decisions made by the umpire.
Kyrgios was fined his first-round prize money of $27,071, as well as an additional $12,840 for unsportsmanlike conduct.