Larry Mize and Jay Haas shared the lead after the completion of the weather-hit first round at the $1.7 million Sprint International at Castle Rock, Colorado, yesterday.
Under the tournament's unique scoring system - five points for eagle, two for birdie, zero for par, and subtracts one point for bogey, three for double bogey or worse - Mize and Haas have 15 points.
First Round Leaders (US unless stated): 15 - L Mize, J Haas; 14 - P Mickelson; 13 - T Lehman; 12 - D Stockton Jnr; 11 - S McCarron, A Magee; 10 - O Browne, B Faxon, D Hart, H Kase (Japan), S Kendall; 9 - S Cink, S Appleby (Aus), S Simpson, K Perry, G Norman (Aus).
Others: 6 - N Price (Zim); 5 - E Els (SA), P Lonard (Australia), R Goosen (SA); 3 - Y Hagawa (Japan); 0 - N Faldo (Eng).