Tour rookie David Horsey, Anthony Wall and Gonzalo Fernandez-Castano shot five-under 67s to share the lead in the BMW PGA Championship on Thursday after some big names faltered early in the first round. Both Englishmen birdied four holes on the back nine, while Fernandez-Castano finished birdie-eagle. Horsey, who won the lower-tier Challenge Tour Order of Merit last year, also shot 67 in the final round of the Irish Open on Sunday, but in entirely different conditions. “I was out first in hardly any winds, good greens and no holdups,” the 24-year-old Horsey said in comparing course conditions to Sunday's strong winds in Ireland. “I managed to adjust quite quickly.” Fourth-ranked Henrik Stenson, winner of the prestigious Players Championship at Sawgrass early this month, shot a 6-over 78. Lee Westwood shot 77 with Ryder Cup teammates Oliver Wilson and Graeme McDowell on 76 and 75, respectively. McDowell said he was again troubled by shin splints in his right leg which forced him out of the Irish Open during Saturday's third round. Masters champion Angel Cabrera and Jose Maria Olazabal, named Wednesday as a new member of Golf's Hall of Fame, both had 74. John Daly shot a one over par 73. Charl Schwartzel, Niclas Fasth, Ross Fischer, Barry Lane and defending champion Miguel Angel Jimenez shot 68s. Paul Casey, Robert Karlsson, Colin Montgomerie and 2003 British Open champion Ben Curtis were among a group of players on 69. Curtis, who is playing in this event for the first time since 2006, birdied the last two holes. Horsey disclosed that his mother Anne has been battling breast cancer since last year and has just completed a round of chemotherapy. The disclosure came a day after it was revealed that Amy Mickelson, the wife of Phil Mickelson, has breast cancer.