Dustin Johnson is set to return to action at the Wells Fargo Championship in May
Johnson was the pre-tournament favourite for the Masters but slipped at home the night before his opening round, damaging his back.
The American attempted to warm up and even walked to the first tee but could not swing his driver and was forced to pull out with having played a single shot.
However, the 32-year-old is back in practice already and will make his competitive return at the Wells Fargo Championship next month.
Masters 2017: Dustin Johnson withdraws from tournament Thu, April 6, 2017
Click to reveal the first snaps as Dustin Johnson withdraws from the Masters 2017
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Click for the first snaps as Dustin Johnson withdraws from the Masters 2017
"I was hitting the ball better today than I was when I injured myself, so that was a lot of fun," Johnson told the Huffington Post yesterday.
"The back's feeling a lot better.
Dustin Johnson was forced to pull out of the Masters at the last possible moment
"It's probably about 85-90 percent right now."
When Johnson got injured, he was the form golfer in the world and it is difficult to imagine that he is now in better form.
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He arrived at Augusta with three consecutive victories under his belt including the World Match Play Championship.
The world No 1 is still well clear of Rory McIlroy and Jason Day at the top of the rankings and will have his eye on defending his US Open title.
Johnson secured his first major title last year after 11 top-10 finishes, winning at Oakmont after Shane Lowry blew a four-stroke lead with a final round of 76.