Stan Musial. He wasn't even selected to the All-Century team.
Apparently playing at the same time as Ted Williams makes you more forgettable in the eyes of the casual fan.
Sure he was, well at least in a way. The All-Century team was a downright bad idea because it was based on the fans' vote, most of which have no concept of baseball history other than the players they have seen and Babe Ruth. Musial made the team through a special panel selection. Its not that big of an insult considering some of the other players who got on through that route include Honus Wagner (the greatest SS of all time) and Lefty Grove (the greatest LHP of all time). Big 6 and Warren Spahn also had to be selected through the special panel.
BTW Musial recieved 570,000+ votes from the fans (about 50,000 shy of making the cut). Tris Speaker who is widely considered the greatest defensive CF as well as one of the greatest offensive players of all time recieved 85,000 votes (less than Lou Brock, Tony Gywnn, and Reggie Jackson). Pretty silly.