Dustin Johnson could be forced to sit out the Masters 2017 after injuring his back
Johnson fell down the stairs of the home he is renting in Augusta yesterday afternoon.
David Winkle, his manager, released a statement saying: “At roughly 3.00 pm [ET, 7pm GMT] today, Dustin took a serious fall on a staircase in his Augusta rental home.
“He landed very hard on his lower back and is now resting, although quite uncomfortably.
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“He has been advised to remain immobile and begin a regimen of anti-inflammatory medication and icing, with the hope of being able to play tomorrow.”
Meanwhile, the Augusta National course was shut down at 1.30pm yesterday because of heavy storms.
Johnson is in the last group in the opening round of the Masters, and is due to tee off at 2.03pm ET (6.03pm GMT) today with two-time Masters champion Bubba Watson and PGA champion Jimmy Walker.
But will the late tee off give the world number one enough time to recover?
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Winkle has said that he will “refrain from commenting until [we] know more about Dustin’s condition”.
On Tuesday, he had described Johnson as being “in as good a shape as I’ve ever seen him in every aspect of his game and his life”.
Heading in to the Masters Johnson has won three straight tournaments, including a pair of World Golf Championships.
Johnson had been the favourite to win the Masters
Johnson's partner Paulina Gretzky and son Tatum Gretzky Johnson have been cheering him on in Augusta
As of 7am this morning, Johnson is the second favourite to win according to bookmaker Betfair, having been the frontrunner before his injury.
His chances of winning have been rated at 8/1, behind Rory McIlroy and Jordan Spieth who are joint favourite at 7/1.
If Johnson wins he will be the first world number one to do so since Tiger Woods in 2002.