Johnson, the US Open champion, is the favourite to win the Masters title after victories in his last three tournaments.
“At roughly 3pm today, Dustin took a serious fall on a staircase in his
“He landed very hard on his lower back and is now resting, although quite uncomfortably.
“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 (Thursday). I will refrain from commenting further until I know more about Dustin’s condition.”
The Masters starts in
No World No 1 has captured the Green Jacket since Tiger Woods in 2002.
“It’s a funny game. It doesn’t matter how good you’re playing, you can still not win,” Johnson, who became the top-ranked player in February, said on Tuesday.
“I’ve got a lot of confidence in my game right now, especially with the way I’ve been playing the last few tournaments. But, you know, anything can happen.”
Apart from top-10 finishes the last two years, Johnson has a modest record at the Masters.
His dreams of winning last year were ruined by two double-bogeys in the final round. He tied for fourth, four shots behind winner Danny Willett.
It is not the first time Johnson’s bid for a Green Jacket has been hit by injury.
The big-hitting American was forced out of the 2012 Masters after injuring his back while lifting a jet ski.