"But sometimes after years of experience like he has, to make a pass with only a 15 percent chance of success, well, you don't take that chance," Servia said. "Sato sees 10 percent; he goes for the gain more than not. But in Edmonton, he changed a little bit. He was second. He was faster than [race winner Helio] Castroneves, but his chances of overtaking him weren't good and he chose to finish the race and take second."