THE 2010 CHICAGO Marathon came down to a duel between two East Africans: Kenyan Sammy Wanjiru and Ethiopian Tsegaye Kebede. The men were ranked one and two in the world, respectively, and their rivalry was fierce. On the line were a prestigious victory and a half- million-dollar purse.
Kebede led from the start. Wanjiru was battling a nagging knee injury, and the Ethiopian easily fended off his repeated attacks. Approaching the last hill, with a lead of several yards, Kebede’s form looked good—he was running tall, shoulders square, arms pumping rhythmically. Wanjiru, by contrast, ran with flailing arms, his face stretched in pain. Then, on the ascent, with less than half a mile to go, Wanjiru launched what appeared to be a hopeless last surge. This time, however, Kebede couldn’t…
