(Reuters) - A late double bogey by world number one Jason Day helped American Dustin Johnson back up his U.S. Open victory with a win at the WGC-Bridgestone Invitational in Akron, Ohio on Sunday.
Johnson closed with 66 for a six-under total of 274 and a one-shot victory over American Scott Piercy (70).
Australian Day (72) finished three shots behind, equal third with Americans Jordan Spieth (67), Matt Kuchar (66) and Kevin Chappell (67).
Johnson and Day were tied for the lead as Day teed off at the 16th and Johnson played the hole ahead.