Tiger Woods has pushed himself into the top spot on Friday, jumping 13 spots to sole possession of the No. 1 ranking.
Woods landed a pair of birdies -- in Holes no. 2 and No. 4 -- and has hit par on everything else so far. He, however, still has a long way to go before he is in the clear. Having not yet finished the front nine, Woods is hotly pursued by a five-way tie that includes Vijay Singh and Thursday's leader Carl Pettersson.
Here's a look at the current standings:
Check out a full leaderboard here.
For more on the PGA Championship, stick with SB Nation St. Louis. For more news, in-depth coverage and analysis, head over to SB Nation's golf hub.