Greg Sacks and Jamie Mcmurray are perhaps two of the greatest upsets in Nascar, at the 1985 Firecracker 400 Sacks drove a blank car with no sponsor to his only win, Mcmurray replaced Sterling Marlin in 2002 won in only his second start. When Sacks won in 1985 his teammate Bobby Allison must have gone crazy considering that he was an upstart driver while Mcmurray replaced Sterling Marlin who had the points for much of the 2002 season.