The 2007 PGA Championship was the 89th PGA Championship, played August 9–12 at Southern Hills Country Club in Tulsa, Oklahoma. Defending champion Tiger Woods won his fourth PGA Championship and 13th major title, two strokes ahead of runner-up Woody Austin. Venue Similar to the upgrades it received prior to the 2001 U.S. Open, Southern Hills underwent extensive renovations to prepare for the 2007 PGA Championship, including new greens and renovated bunkers, as well as an upgrade to the clubhouse. A major heatwave gripping the United States impacted playing conditions significantly. The high temperature for the four days of the tournament reached 101, 99, 99, and 102. Joking about the heat after hooking one of his drives into the trees, Colin Montgomerie said "at least it's in the shade". It was the seventh major championship and fourth PGA Championship at Southern Hills; the three previous winners were Dave Stockton (1970), Raymond Floyd (1982) and Nick Price (1994). The U.S. Open winners were Tommy Bolt (1958), Hubert Green (1977), and Retief Goosen (2001). Course layout Lengths of the course in previous major championships: , par 70 - 2001 U.S. Open , par 70 - 1994 PGA Championship , par 70 - 1982 PGA Championship , par 70 - 1977 U.S. Open , par 70 - 1970 PGA Championship , par 70 - 1958 U.S. Open Field All former PGA Champions The last five U.S. Open Champions (2003 through 2007) The last five Masters Champions (2003 through 2007) The last five Open Champions (2003 through 2007) Current PGA Seniors' Champion (2007) The 15 low scorers and ties in the 2006 PGA Championship The 20 low scorers in the 2007 PGA Professional National Championship (formerly CPC) The 70 leaders in official money standings from the 2006 International through the 2007 Canadian Open Members of the 2006 United States Ryder Cup team Winners of tournaments co-sponsored or approved by the PGA Tour from the 2006 PGA Championship to the 2007 PGA Championship (does not include Pro-Am and Team competitions). In addition, the PGA reserves the right to invite additional players not included in the categories listed above. The 156-player field will be filled (in order) by those players below 70th place in official money standings (#8 above). Past champions in the field Made the cut Missed the cut Round summaries First round Thursday, August 9, 2007 Graeme Storm led the field after the first round