A Hall of Fame substitute
Updated: February 25, 2007, 10:47 PM ET
FONTANA, Calif. -- Troy Aikman isn't accustomed to filling in as a sub, but he gladly accepted the role Sunday when asked to wave the green flag for the Auto Club 500.
The NFL Hall of Famer replaced actor Rick Schroeder, who was scheduled to do the honors before telling California Speedway officials Saturday that he couldn't make it.
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