The Northern Irishman claimed a one-shot victory at the CJ Cup and joins Tiger Woods, Phil Mickelson and Dustin Johnson as the only golfers younger than 55 years old with 20 PGA Tour victories.
After a triple-bogey 7 on the par-4 17th in the opening round, McIlroy went 40 consecutive holes without a bogey, going 18-under par over that stretch.