SAN DIEGO (AP) — Jason Day sank an 18-inch birdie putt on the sixth playoff hole to beat Alex Noren and win the Farmers Insurance Open in front of empty grandstands on No. 18 at Torrey Pines.

Day and Noren had to return Monday morning after grinding through five playoff holes Sunday before it got too dark to continue.

Day teed off at 8:04 a.m. and sank the winning putt 13 minutes later, his fourth birdie on the par-5 hole in the playoff.

His victory was accompanied only by the sounds of camera shutters and cheers from Day's family members.

Spectators weren't allowed in because organizers said they didn't have time to arrange for security.

Noren tried an aggressive second shot from the first cut, but his ball landed short of the green and rolled into a pond.

Day, meanwhile, hit his second shot out of the rough and over some trees onto the fairway before hitting a beautiful approach shot that set up the winning putt.