SEVILLE, Spain (AP) _ Three of the most acclaimed world records in track and field are now official.

The International Amateur Athletic Federation on Monday formally ratified new records in the 100 meters (Maurice Greene, 9.79 seconds), mile (Hicham El Guerrouj, 3:43.13) and decathlon (Tomas Dvorak, 8,994 points).

Greene smashed Donovan Bailey's 100-meter mark of 9.84 seconds from the 1996 Atlanta Olympics on June 16 in Athens, Greece.

El Guerrouj broke Noureddine Morceli's six-year-old mile mark of 3:44.39 in Rome on July 7.

Dvorak beat Dan O'Brien's seven-year-old decathlon record of 8,991 points in Prague, Czech Republic, on July 4.

All three athletes are favorites in their events at the World Championships, which is Aug. 21-29 in Seville.