2007 Tavares Jefferson, separated shoulder in MBA game missed entire season. 2008 Cody Tollison as a Jr. was slated to be the starting QB and had an ACL before the season started. Rodney Anderson had an ACL early in the season (the other knee from this year). Daniel Mc Fadden starting TE & DE ACL early in the season. 2009 Jacob Carter, Safety, WR broken collar bone mid-season, Cory Sacks, DB, WR back injury pre-season missed first 4 or 5 games, Smithy McClain, OT Concussion, out for season, Calvin Settles, OT, DT ACL out for season.
I'm sure there were others but this are off the top of my head. The reason you may not recall any of this is because very little was said about it. Ricky just lines up and plays with who he has.