http://www.msnbc.msn.com/id/4788742

Associated Press Sports
Updated: 2:29 p.m. ET April 20, 2004

Four U.S. track and field athletes received public warnings for using the stimulant modafinil, but they can compete at the Athens Olympics and other events this year.

Sprinter Chryste Gaines and hurdlers Sandra Glover and Eric Thomas tested positive for modafinil at the U.S. championships in June. Another hurdler, Chris Phillips, tested positive at the world championships in August.

Thomas was stripped of his national championship in the 400-meter hurdles.

The U.S. Anti-Doping Agency announced Tuesday that all four accepted their sanctions, including a public warning and forfeiting results from the event where they tested positive.

In 2003, modafinil was considered a minor stimulant that warranted only a disqualification. Starting this year, modafinil is classified as a serious stimulant on the World Anti-Doping Agency banned list and carries a two-year ban.

Sprint champion Kelli White is still contesting her positive tests for modafinil at the U.S. and world championships. She expects an arbitration hearing next month.

White, who could lose world titles in the 100 and 200, said she was prescribed modafinil for a sleeping disorder.

White and Gaines are coached by Remi Korchemny, one of four men charged in February with distributing performance-enhancing drugs. Phillips said Korchemny gave him a modafinil pill at the world championships to help him overcome jet lag.

Korchemny and his three co-defendants, including Barry Bonds' personal trainer, pleaded innocent.