How many players do these teams dress? I counted 120 on the msu roster? Some guys must have the same jersey numbers?
Colleges may have 85 scholarship players, and quite a few walk ons. For bowl games, they dress everyone up, and except for players who are redshirting, try to get everyone at least one snap, so they can say they played in a bowl game.
Teams may issue the same jersey number to two players, usually one on offense and one on defense. At Baylor, for example, Corey Coleman is #1 on offense, Taylor Young is #1 on defense.