LA QUINTA, Calif. — James Hahn’s family moved to Oakland from South Korea when he was 2, and he started playing golf two years later at his father’s driving range.

“Just a `Tin Cup’ kind of guy,” Hahn said. “Just a driving range rat.”

On Friday, in only his third big-league tournament, the 31-year-old PGA Tour rookie found himself tied for the Humana Challenge lead for the second straight day.

“I’m just soaking it in, having a good time,” Hahn said. “Any time that I play a good round, it feels good and makes me cherish the momentum a little bit more, because I know they’re few and far between.”

Hahn finished with a 5-under 67 to match Roberto Castro at 14 under after another day of perfect conditions in the Coachella Valley. Castro shot a 67 on PGA West’s Arnold Palmer Private Course after they began the round tied for the lead with Jason Kokrak at 63.

Castro had the lead alone at 16 under, but bogeyed two of his last three holes — three-putting the par-4 ninth.

“A couple slipped away there at the end, but yesterday I made a 50-footer on the last,” Castro said. “Today, I felt like I hit a good putt and three-putted. So, that’s stuff over 72 holes that’s going to even out.”

Castro is in his second season on the tour. The 27-year-old missed the cut last week in Hawaii.