SAN MARTIN -- Former Cal star James Hahn of Alameda withdrew from the Frys.com Open before the first round suffering from food poisoning, according to a PGA Tour official.

Hahn, who gained notoriety finishing tied for third at the 2013 AT&T National Pebble Beach Pro-Am, along and his Gangnam Style dance at the Phoenix Open, didn't offer any early tweets regarding his ailment. He concluded the previous tour season with a missed cut at The Barclays to finish 110th in FedExCup standings. John Merrick also withdrew on Thursday morning with an injury.

The withdrawals enabled former Stanford player Alex Aragon and Tim Wilkinson spots in the season-opening event. Aragon surged to the leader board with three birdies on the back nine to move to 3-under. Aragon earned his first title on the Nationwide Tour (now the Web.com Tour) at TPC Stonebrae in Hayward in 2012,

Jeff Overton and Kyle Stanley share the early Frys.com Open lead at 5-under