Olympic champion Laure Manaudou of Francebroke Janet Evans' 18-year-old world record in the 400-meter freestyle Friday, finishing in 4 minutes, 3.03 seconds at the French national championships.

American Justin Gatlin broke the 100-meter world record with a time of 9.76 seconds Friday in Qatar. Asafa Powell of Jamaica set the previous mark at 9.77 seconds last year in Athens, Greece.