No any sign in physical appearance of Roger Clemens can prove that he has taken steroids

Every baseball fan knows that Roger Clemens is charged with obstruction of justice. It is affirmed that he has lied before Congress about administration of steroids and HGH.
Rusty Hardin, the defense attorney for Roger Clemens, pointed out that Roger Clemens’ physical appearance didn’t change greatly before, during and after his working with the trainer Brian McNamee. The attorney claimed that this factor proved that Roger Clemens hadn’t administered steroids and other related medications.
Enhancement of muscle mass is normally utilized by prosecutors as proof that a sportsperson uses steroids or/and other related preparations. But this tendency was not utilized during the governmental case against Roger Clemens. No one could confirm that muscles of Roger Clemens manifested that he had administered steroids and HGH. It is one of differences between the cases against Roger Clemens and Barry Bonds.
As for the governmental case against Barry Bonds, federal prosecutors called many persons in the trial that could testify that anabolic steroids led to essential changes in physical appearance of this person. They confirmed that intake of steroids led to increase of muscle mass, increased size of the head and shrinkage of testicles in Barry Bonds.
Thus, Rusty Hardin showed 4 pictures of Roger Clemens. The pictures manifested physical appearance of Roger Clemens, including the time when Clemens was working with Brian McNamee. Hardin noted that the photos manifested that there was no difference in physical changes that could manifest that he utilized steroids and HGH.
The attorney Rusty Hardin confirmed that the pictures displayed just the process of ageing. The masseur Cheryl Redfern also confirmed that she didn’t observe any changes in physique of Roger Clemens. Roger Clemens experienced neither back acne, nor abnormal development of breast tissue, nor essentially increased muscle mass.
Phil Garner, a former baseball player, also confirmed that there were not any essential changes in physical appearance and performance of Roger Clemens during working with Brian McNamee.
The Assistant US Attorney Steve Durham tried to discredit the argument about lack of physical changes in Roger Clemens during the cross-examination of Garner. He confirmed that while certain steroids increased muscle mass, others didn’t induce gaining muscles. So, he affirmed that the photos could display nothing about steroid use.
Federal prosecutors desire to take advantages in both cases: in the case against Roger Clemens and in that against Barry Bonds. While they confirm that changes in physical appearance of Barry Bonds display that he has administered steroids, lack of changes in physical appearance of Roger Clemens doesn’t prove that he hasn’t applied steroids.