Athletics World Championships 1983 at Helsinki (fin) Men: 400 m August 10: Final: 1. Bert Cameron (jam) 45.05 2. Michael Franks (usa) 45.22 3. Sunder Nix (usa) 45.24 4. Erwin Skamrahl (wge) 45.37 5. Hartmut Weber (wge) 45.49 6. Thomas Schönlebe (ege) 45.50 7. Michael Paul (tri) 45.80 8. Gerson Souza (bra) 45.91