Over half the field has hit the course at the 2013 PGA Championship, with 23 players currently under par. Jim Furyk, who is 5-under through 15 holes, is alone at the top of the leaderboard.
Furyk hasn't been a factor in major championships this season, but he's off to a good start in the first round. He began his round with a birdie on No. 10 and made the turn at 3-under. A birdie on No. 1 and another on No. 4 moved him into the lead. Furyk has yet to make a bogey.
David Hearn took the lead into the clubhouse after he posted a 4-under 66. Hearn bogeyed his first and last holes in the round with six birdies and 10 pars in between. Robert Garrigus, Paul Casey and Matt Kuchar are among the group at 3-under after all shooting 67.
Tiger Woods hasn't made a birdie in 10 holes and is currently 1-under with two holes to play. Woods has had several birdie opportunities but hasn't putted very well.
Here is a look at the top of the leaderboard.