I'd personally like to see Lombardozzi, but I doubt he's ready for major league pitching so that'd be a rash move most likely (though I think if he plays well he should get a look in September...but I'm a big fan of his and that may be a biased opinion).
Corey Brown doesn't deserve a look (hitting .202, OBP of .322 though), Michael Aubrey is hitting well so I guess he deserves a cup of coffee as well....
Bixler has to go, I can't think of a player more worthless that we have had.
Marrero is the only real option other than Aubrey to call up for hitters. Aubrey isn't in the AAA lineup today... Could just be a day off even though he's played in 7 straight games prior to today.