Andy Murray, renowned for his sense of humour, played an April Fool on Tuesday when he declared on Twitter he would name his new coach tomorrow.
Murray split with Ivan Lendl last month after two triumphant years, and is expected to hire a new coach before the French Open starts on 20 May.
"And 2 avoid confusion like last time i will be announcing my new coach tomorrow #pumped," he tweeted.
"I'm the joker now, Djoker."
Plenty were unconvinced, but the initial responses feature a few gullible tweeters.