5 Defensive Starters were either walkons, unranked (usually given a 4.9) or were given a bottom line 5.0 ranking by Rivals. And we are talking about the starters.
The Rivals Rating is composed of a numerical scale from 6.1-4.9.
-6.1 Franchise Player; considered one of the elite prospects in the country, generally among the nation's top 25 players overall; deemed to have excellent pro potential; high-major prospect
-6.0-5.8 All-American Candidate; high-major prospect; considered one of the nation's top 200 prospects; deemed to have pro potential and ability to make an impact on college team
-5.7-5.5 All-Region Selection; considered among the region's top prospects and among the top 700 or so prospects in the country; high-to-mid-major prospect; deemed to have pro potential and ability to make an impact on college team
-5.4-5.0 Division I prospect; considered a mid-major prospect; deemed to have limited pro potential but definite Division I prospect; may be more of a role player
-4.9 Sleeper; no Rivals.com expert knew much, if anything, about this player; a prospect that only a college coach really knew about.