LOS ANGELES — James Hahn had reason to feel like a nobody at Riviera.

He was among seven players who had at least a share of the lead on the back nine at some point during the final round of the Northern Trust Open. All of them were PGA Tour winners. Two have won majors. One is in the Hall of Fame. Three have played multiple times in the Ryder Cup.

James Hahn?

The former shoe salesman played the final round with Dustin Johnson and Jim Furyk, and as they walked up the stairs to sign their cards, Hahn heard a little kid say, “Good job, Jim. Good job, Dustin.” And then he blanked when he saw Hahn.

“Even when I was signing hats after the round, I asked some guy, `Hey, is there a playoff? Like, what’s going on?’ He’s like, `Yeah, yeah, yeah. It’s Dustin Johnson, Paul Casey and some other guy.’ I was like, `Yeah? OK, cool. Here’s your hat.”’

The other guy won.

With a back story fit for Hollywood, in a three-man playoff off Sunset Boulevard just as the Academy Awards show was getting started, Hahn turned in the performance of his life for his first PGA Tour title and a spot in the Masters.

Hahn had to save par by chipping with a hybrid from the back of the 18th green for a 2-under 69, and then had to watch Johnson’s 10-foot birdie putt for the victory snap off in front of the cup. Johnson shot a 69.

Casey finished earlier, a bogey-birdie-birdie-bogey finish for a 68. They were at 6-under 278.