American professional golfer, Dustin Johnson has backed out of this week's CJ Cup after testing positive for COVID-19, the PGA Tour said on Tuesday. Dustin last competed at September's U.S. Open, notified Tour officials he was showing symptoms and was conducted a test, leading to his step down from the Las Vegas event as he begins to self-isolate, the Tour said. "I am very disappointed," Johnson said. "I was looking forward to competing this week but will do everything I can to return