American sprinters won four of six races billed as the U.S. vs. the World at the Penn Relays in Philadelphia, beating rival Jamaica to win the men?s and the women?s 4x100- and 4x400-meter relays.
American sprinters won four of six races billed as the U.S. vs. the World at the Penn Relays in Philadelphia, beating rival Jamaica to win the men?s and the women?s 4x100- and 4x400-meter relays.