Athletics World Championships 1991 at Tokyo (jpn) Men: 400 m August 29: Final: 1. Antonio Pettigrew (usa) 44.57 2. Roger Black (gbr) 44.62 3. Danny Everett (usa) 44.63 4. Roberto Hernández (cub) 44.86 5. Andrew Valmon (usa) 45.09 6. Ian Morris (tri) 45.12 7. Susumu Takano (jpn) 45.39 8. Mark Garner (aus) 45.47