The 5-foot-8, 170-pound Sims, visited Michigan State a few weeks ago unofficially but saw enough to stop the recruiting process and give his pledge.
A wide receiver his junior season, Sims is projected to return to the defensive side of the ball in college.
Sims is the fifth member of the Class of 2011 for Mark Dantonio.
SpartanDigest.com will have more on Sims pledge to the Spartans later.
Here are highlights from this past season.