Looking into Cerrano's Locker

For no logical reason whatsoever, while I was watching "Major League" on TV and the scene came to Pedro Cerrano looking in his locker for the red tag, I noticed baseball cards hanging there.  Well, I took it upon myself to waste part of an afternoon and find out just what cards they had placed there.  I managed to figure out all but one so far...

1 - 1984 Donruss Diamond Kings Eddie Murray
2 - 1968 Topps Game Roberto Clemente
3 -
4 - 1971 Topps Willie McCovey
5 - 1954 Topps Hank Aaron
6 - 1952 Topps Jackie Robinson