SAN FRANCISCO -- A federal judge on Friday declined to toss out track coach Trevor Graham's conviction for lying to federal investigators in a performance-enhancing drug probe.

A jury convicted Graham in May of making false statements during the investigation into whether sprinter Marion Jones and other athletes lied to authorities about their performance-enhancing drug use. Authorities say Graham lied about his relationship to an admitted drug dealer who provided drugs to the coach's athletes.

Graham's lawyers unsuccessfully argued Friday that the lies had no effect on the sports doping probe, an element prosecutors needed to prove to convict the track coach.

The jury couldn't unanimously decide two other false statement charges, and prosecutors said Friday they will not seek another trial on those counts.

Graham is scheduled to be sentenced Oct. 15 and faces up to a year in prison.

The U.S. Anti-Doping Agency on Tuesday handed the disgraced coach a lifetime ban from most track and fields organizations, including the U.S. Olympics Committee.

Graham was the second person from the scandal stemming from a performance-enhancing drug ring based at Bay Area Laboratory Co-Operative to be convicted at trial. His trial featured a long parade to the witness stand of the coach's former athletes who testified that he helped supply them with drugs.

Federal investigators testified that Graham's lies hindered their investigation into Jones' drug use. Jones, who was coached by Graham, told a grand jury in 2004 that she never used drugs, but it wasn't until 2007 that she was charged with lying and pleaded guilty.

Former elite cyclist Tammy Thomas was found guilty in April of lying to a federal grand jury when she denied taking steroids.

Eight others, including Jones and BALCO founder Victor Conte, have pleaded guilty to charges that stemmed from the September 2003 raid on BALCO headquarters in Burlingame.

Major League Baseball home run record holder Barry Bonds is scheduled for trial in March for allegedly lying to a grand jury about his performance-enhancing drug use.