McGwire's enshrinement become a hot topic after he admitted Monday to using steroids.
"Put it this way, if the steroids were not an issue, he would definitely be a first-[ballot] selection in the Hall of Fame," Piniella said Wednesday. "Is he a Hall of Famer? I would probably think that down the road he will be a Hall of Famer, maybe not in the first few ballots.
"People tend to forget [incidents like the steroids admission], and rightfully so."