Twyman was a beast as a redshirt sophomore. Whitehead was pretty damn good as a true freshman. Aston was doing it by his redshirt freshman, sophomore at the latest, year. As were Brian O'Neill, Johnson, and Bisnowaty. Ford's best year was as a redshirt sophomore. Dennis and Kancey are mentioned below. Mathis and Pinnock both began contributing as true freshmen and were pretty solid the next year. Weaver showed flashes and I believe started as a redshirt freshman. Morrissey has been our best lineman and had been starting since he was a redshirt freshman. Cam Bright had a really good year as a redshirt sophomore. Hamlin was pretty solid as a true sophomore. Jones was contributing in the delta package as a redshirt freshman. I could go on for the rest of the year, probably.
I actually think it's more rare for a really good player to not do some good things on the field and contribute heavily before he is a junior.