Snedeker shares Pebble lead

Brandt Snedeker and James Hahn are tied for the lead with a round to go at the AT&T Pebble Beach National Pro-Am.

Snedeker, runner-up to Tiger Woods at Torrey Pines and to Phil Mickelson at Phoenix in the last two weeks, carded a four-under 68 at Pebble Beach on Sunday to post 12-under - a score later matched by new cult figure Hahn.

Last year's FedExCup winner Snedeker, who currently tops this year's standings, made his move with four successive birdies on Pebble Beach's spectacular stretch of front nine ocean holes.

After a four at the long sixth, he put his tee-shot at the downhill seventh to just over nine feet and holed for a two and then made birdie threes at eight at nine from inside five feet after two superb approaches.

At one point, Snedeker enjoyed a four-shot lead but he was caught by Hahn after the rookie closed with a hat-trick of birdies at Spyglass Hill.

Hahn, whose Gangnam Style dance on the 16th at Phoenix last week turned him into into an internet sensation, added three other birdies in a round of 66 to help him pull level with Snedeker.

The duo lead by a shot from Chris Kirk at 11-under while it's another stroke back to Patrick Reed on a leaderboard showing five American players at the top.

It was a disappointing day for Lee Westwood, who slipped to three-under after a one-over 73 at Spyglass.

Last week's Phoenix hero Mickelson slipped too - both down the leaderboard and onto his backside.

The left-hander fell onto his posterior after climbing down the rocks in search of his ball after a wild drive off the cliff at 18. He eventually racked up a triple bogey eight and only just made the cut on one-under.

After rotating between three different courses for the first three days, the tournament is concluded at Pebble Beach on Sunday.