United States team member Tiger Woods, lower left, warms up for his approach shot on the ninth hole during fourth round four-ball matches of the Presidents Cup Golf Tournament at the Royal Montreal Golf Club in Montreal, Canada, Saturday Sept. 29, 2007.

United States team member Tiger Woods, lower left, warms up for his approach shot on the ninth hole during fourth round four-ball matches of the Presidents Cup Golf Tournament at the Royal Montreal Golf Club in Montreal, Canada, Saturday Sept. 29, 2007.