USC freshman fullback Soma Vainuku has some big spikes to fill at fullback with Stanley Havili off to the NFL. Vainuku is just 18 years old but is already listed as the starter. At 255 pounds, he is much bigger than Havili but still provides that multi-threat dimension.
While Vainuku has limited fantasy value, he should blast open some holes of Marc Tyler, D.J. Morgan, and Dillon Baxter this season.