BLAINE, Minn. – World No. 2 Dustin Johnson had a new man on his bag for Thursday’s first round of the 3M Open at TPC Twin Cities after his brother, Austin Johnson, who goes by AJ, tested positive for COVID-19 earlier this week.

AJ has been walking in step with his older brother inside the gallery ropes since 2013 and was by his side when Dustin reached world No. 1 and won the 2016 U.S. Open, 2020 Masters and 2020 FedEx Cup.

“I feel great,” AJ said in a text with Golfweek from his home in Florida, where he is in quarantine. He is asymptomatic.

TaylorMade VP of Tour Operations Keith Sbarbaro took over on the bag for the this week. Sbarbaro caddied for Dustin in the 2011 Presidents Cup in Australia.

Dustin, who tied for eighth in last week’s British Open, was 1 under through 12 holes.

AJ said he felt sluggish on Monday after the flight from the British Open in Sandwich, England, and decided to take a test to be on the safe side. When he got the result, he began driving to Florida on Monday afternoon.