COLORADO SPRINGS, Colo. — An appeal by Greco-Roman wrestler Joe Warren to reduce his two-year doping suspension was dismissed by the Court of Arbitration for Sport.

The U.S. Anti-Doping Agency said Friday that a three-person CAS panel turned down the appeal by Warren, of Colorado Springs, who was suspended after testing positive for marijuana.

Warren, 31, flunked a drug test at the Senior World Team Trials on June 10, 2007. It was his second doping offense.

Warren's two-year period of ineligibility began on July 23, 2007, the date of his acceptance of a provisional suspension. He has been disqualified from his event results at the Senior World Team Trials, including his first-place finish in the Seniors 60 kg division.