The full field is on the course at the 2013 Humana Challenge, and there are already birdies aplenty for the leaders. Scott Stallings started the day with a five-shot lead, with 30-under as a number that was in play. In his first five holes, Stallings quickly added three more red numbers to his score to move to 25-under for the tournament. If Stallings keeps up that pace, no one will come close to chasing him down and he'll run away with his third career victory.
But there are definitely a few players trying to apply pressure to Stallings, including Kevin Chappell, who's making a bid to break 60. Chappell has been unconscious with the putter, rolling in nine birdies through his first 14 holes. David Duval made history here when he shot his 59 back in 1999, and Chappell will need to birdie his final four holes to match that feat. It's unlikely he'll be able to pull it off, but he has moved 40 spots up the leaderboard and into third place at 21-under.
Brian Gay, a three-time winner on Tour, is known for his streaky play and he's making a move to try and get to Stallings. Gay could also be on "59 watch" on his back nine, as he's carded birdies on six of his first eight holes to move to 22-under, three shots back of the lead.
Phil Mickelson, the biggest name in the field, is 4-under through his first 10 holes. But at 15-under and 10 shots back, Mickelson will simply try to get hot on the back nine and carry some momentum into next week, when the Tour visits Torrey Pines, a home course of sorts for him.
For a live leaderboard, vist Golf.com.