 At the 1928 Winter Olympics in St. Moritz, Jaffee finished fourth in the 5000-meter skate, the best finish by an American in that event to that date.In the later 10,000-meter race, Jaffee was leading the competition, having outskated Norwegian defending world champion Bernt Evensen in their heat, when rising temperatures thawed the ice.In a controversial ruling, the Norwegian referee canceled the entire competition.