Childhood friend slugs at Bonds

Star said his butt was sore from injections - key witness

SAN FRANCISCO - Baseball's home run king admitted to using steroids and even complained about the pain from receiving injections, an old friend of Barry Bonds testified in the tarnished star's perjury trial on Wednesday.

Steve Hoskins, a childhood friend of the slugger and former business partner, said he first became aware the former Major League Baseball player was using steroids when Bonds asked him to investigate their health effects.