INDIANAPOLIS, Indiana, June 22 - Tyson Gay, getting what he said was his fastest start ever, won the 100 metres in the year's fastest time, 9.84 seconds, at the U.S. championships on Friday.

With a blazing final 50 metres and a strong start, Gay won the race by an impressive 0.23 seconds, the largest margin of victory in a U.S. championships 100 metres since electronic timing began in 1975.

"I was really hoping to get the world record, but the wind conditions weren't too friendly," said Gay, who ran into a headwind of 0.5 metres per second.

Only former world record holder Maurice Greene, who ran 9.82 seconds at the 2001 world championships, has run faster into a headwind. His headwind was 0.2 meters per seconds.

University student Trindon Holliday finished second in 10.07 seconds and collegiate champion Walter Dix was third in 10.09.

"That was basically my PR (personal record) so I know I am ready to run faster," added Gay, who has run times of 9.76 and 9.79 seconds with assisting winds this year.

Jamaican Asafa Powell holds the world record of 9.77 seconds which since-suspended American Justin Gatlin later equaled.

Dix, the collegiate 100 and 200 metres champion, had said earlier he would not run the final, but changed his mind and said he would now go to the world championships.

Gay will begin his quest for a 200 metres title with Saturday's qualifying.

EDWARDS FIRST

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