Dustin Johnson fears his preparations for next week's Masters have been hindered by his positive test for coronavirus.
The world number one was forced into a period of self-isolation after he tested positive for the virus while en route to the CJ Cup at Shadow Creek in Las Vegas last month.
He subsequently missed the tournament as well as the Zozo Championship in Los Angeles as he was confined to his hotel room for 11 days.
He will make his return at this week's Vivint Houston Open but the 36-year-old is worried that his lack of practice will have an impact on his ability to challenge for the green jacket at Augusta National next week.
"My health is good. The state of my game is undetermined," Johnson told reporters in Houston. "It wasn't that bad (in) as far as I didn't get really sick. I felt like I had a cold for a few days and then after that I didn't – so I was pretty much asymptomatic.
"A little fatigue and things like that, but I couldn't really figure out if that was because I was stuck in a hotel room for like 11 days not doing anything or if it was COVID that made me feel that way.
"I didn't leave the room for 11 days, I was just laying around kind of doing nothing. I watched a lot of TV, but even then I ran out of stuff to watch. It was really boring.
"It definitely puts a wrench in your plans on what you were trying to do. Obviously I was planning on playing Shadow Creek and Sherwood, those two events. I had a lot more time off than I was planning on."
While his competitors will be required to take a test ahead of the Masters, Johnson will not have to go through the process due his recent battle against the virus and he admits that is one less worry to contend with.
"The only good thing that came out of this is I know I'm playing next week at the Masters. Yeah, I would be nervous, for sure," Johnson added.
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