But for the athletes, it was business as usual, and the opening day of competition yielded some fine marks. The first men’s final, the shot, featured a duel between Korea’s Si-hoon Park and Brazil’s Alessandro Borges. The night’s other final saw the USA’s mixed 4×4 run away from the field to finish in 3:15.31, by 2-plus seconds the fastest U20 time ever recorded. The 100 final, with Jamaica’s Gary Card (10.07 prelim) and South Africa’s Marko Ferreira (10.13 semi) will be a battle. WORLD U20 CHAMPS DAY 1 MEN’S RESULTS100 Heats: I(0.3)–1.