O

Jerry Oakes, 2002 Beloit, 2003 Quad City
Matt Oakes, 2003 West Michigan
Steve Obenchain, 2003 Kane County
Spencer Oborn, 2000 Burlington
Mark Obradovich, 2002 Michigan
Wes O'Brien, 2003 2004 Lansing
Bill O'Brien, 1947 West Frankfort
Brian O'Connor, 1999 2000 2001 Michigan
Ryan O'Donnell, 2001 Fort Wayne
Trent Oeltjen, 2002 2003 Quad City
Eric O'Flaherty, 2004 2005 Wisconsin
Mike O'Keefe, 2000 Cedar Rapids
Thomas Oldham, 2004 Wisconsin
Chris Olean, 2000 Beloit
Steve Oliverio, 1984 1985 Cedar Rapids
Luis Oliveros, 2002 Wisconsin
Ray Olmedo, 2000 Dayton
Walter Olmstead, 2004 Dayton
Kevin Olore, 2000 2001 Wisconsin
Justin Olson, 2003 Quad City
Ryan O'Malley, 2003 Lansing
Brandon O'Neal, 2001 Cedar Rapids
Pete Orgill, 2000 Cedar Rapids
Chris O'Riordan, 2003 Clinton
Nick Orlandos, 2004 Wisconsin
Daniel Ortiz, 2002 Kane County
Matt Ortiz, 2000 2001 Peoria
Miguel Ortiz, 2000 Cedar Rapids
Omar Ortiz, 1999 2000 Fort Wayne, 2003 Clinton
Paul Ortosky, 1947 Mattoon
Jim Osborne, 1947 Mattoon
Ian Ostlund, 2003 2005 West Michigan
Mark O'Sullivan, 2002 Cedar Rapids
Paul O'Toole, 2002 2003 Lansing
Eugene Otto, 1947 Belleville
Jeremy Owens, 1999 Fort Wayne
Chris Oxspring, 2001 Fort Wayne