The Big 12 has seen a lot of change take place in its league in recent years. Traditionally dominated by Oklahoma and Texas, the conference now has schools such as Baylor and Oklahoma State rising to power.
Recruiting in the Big 12 has become more important than ever, which is why losing a commitment is such a huge blow. Several programs within the conference have a pledged prospect who may decide not to be a part of its class in February.
A receiver could choose to bolt for Notre Dame, while a linebacker is looking around. Plus, an offensive lineman's commitment doesn't appear to be strong.