Dustin Johnson tests positive for COVID-19.

SHOWS:

MAMARONECK, NEW YORK, USA;(SEPTEMBER 15, 2020)(MANDATORY CREDIT: BRAD PENNER-USA TODAY SPORTS/FILE PHOTO)

1. DUSTIN JOHNSON SMILES ON THE ELEVENTH GREEN DURING A PRACTICE ROUND FOR THE 2020 U.S. OPEN GOLF TOURNAMENT AT WINGED FOOT GOLF CLUB - WEST.

SOCIAL MEDIA (OCTOBER 13, 2020) (PGA TOUR TWITTER ACCOUNT-ACCESS ALL)

2. PGA ANNOUCEMENT THAT DUSTIN JOHNSON HAD TESTED POSITIVE FOR COVID-19

GUYANCOURT, FRANCE - (SEPTEMBER 27, 2018) (REUTERS STILL PHOTO-ACCES ALL)

3. TEAM USA'S DUSTIN JOHNSON DURING PRACTICE REUTERS/CHARLES PLATIAU

CARNOUSTIE, BRITAIN - (JULY 18, 2018) (REUTERS STILL PHOTO-ACCESS ALL)

4. DUSTIN JOHNSON OF THE U.S. IN ACTION DURING THE PRACTICE ROUND AT THE OPEN CHAMPIONSHIP

CARNOUSTIE, BRITAIN (JULY 16, 2018) (REUTERS STILL PHOTO-ACCESS ALL)

5. DUSTIN JOHNSON OF THE U.S. DURING PRACTICE REUTERS/ANDREW YATES

STORY: World number one Dustin Johnson has tested positive for COVID-19, the PGA Tour said in a statement on Tuesday (October 13). The 36-year-old American, who last competed at September's U.S. Open, has withdrawn from this week's CJ Cup in light of the diagnosis as he begins to self-isolate, the Tour added.

"Obviously, I am very disappointed," Johnson said.

"I was really looking forward to competing this week, but will do everything I can to return as quickly as possible. I have already had a few calls with the Tour's medical team and appreciate all the support and guidance they have given me."

Johnson has had a sensational year, winning his first FedExCup championship at East Lake last month before taking home PGA Tour Player of the Year honours for the second time.

(Peter Bullock)