These two guys are going to help shape baseball?

Over the past couple of weeks, we've been presented with news of players testifying against former teammates. These men will help mold our historical perspective on the late 80s and 90s. One is a pitcher, one a catcher. The pitcher will testify against Clemens, because he trained with he and Pettite. This pitcher was C.J. Nitkowski, he of the 5.37 lifetime ERA.
The catcher will be testifying against Barry Bonds. This catcher, Bobby Estalella will be most remembered for testifying againts Barry Bonds, probably not his career .216 average.
But these two mediocre players are going to be involved in defining the legacy of two of the greatest players of all time.