Comparing the most-recent minor league roster with the lineups the last four days, there are six position players who have yet to appear. When I use the word "lineups," I'm referring to Double-A, Triple-A and the two Class A's.
Jesus Araiza (I've seen him, in uniform)
Ian Tomkins (believe I saw him and, if I did, it had to be in uniform)
Leonardo Reginatto (he played in EXT game Wednesday)
Brett Nommensen (I've seen him, in workout clothes)
THURSDAY AFTERNOON UPDATE: Saw Araiza, Narvaez, Tomkins and Nommensen in uniform.