College football recruiting is not an exact science, and many 4- and 5-star recruits don't pan out the way schools think they will. Wide receiver Duron Carter is a good example of that.
Of course, for every awesome recruit that doesn't get anywhere, there is a 2- or 3-star prospect that goes on to do great things. Through hard work and excellent coaching, these unheralded recruits become the faces of their programs.
From top-10 picks in the draft to major contributors currently on the field, here are 50 recruits who became stars in college despite being given no more than a 3-star rating coming out of high school.