Barry Bonds' attorney is asking a judge to prohibit recordings of a conversation between his business partner
and personal trainer from being played during the former player's perjury trial set for March 21.
The recording was made in March 2003 when business partner Stevie Hoskins and trainer Greg Anderson appeared to discuss steroids and needles.
Hoskins secretly recorded the conversation and turned it over to federal investigators.
On Friday, Bonds' attorney will ask U.S. District Judge Susan Illston to prohibit the recording from being played.
Prosecutors want the jury to hear the tape to bolster their case that alleges Bonds lied to a federal grand jury when he denied knowingly taking performance enhancing drugs.
A ruling for Bonds would be another blow to the prosecution.
On Thursday, the government pared down the number of charges from 11