Leading Off

COLOR PHOTO

PHOTOGRAPH BY HEINZ KLUETMEIER

Butterfly Effect

MICHAEL PHELPS set a world record in the 400-meter individual medley final last Saturday to claim the first of what he hoped would be eight gold medals in Athens; that quest was derailed the next day, when South Africa set a world record in winning the 4√ó100-meter freestyle relay, in which Phelps and his U.S. teammates took the bronze.