On every team in the country, there are at least one or a few names on the roster that are a serious injury or off-the-field issue away from crumbling their program's hope for next season.
In some cases, a star player goes down and a young talented guy waiting in the wings steps in and blossoms. Problem solved.
In others, a star player gets knocked out and the season dims.
It all depends on depth, talent, and circumstance.
Let's take a look at the top 25 irreplaceable players for the 2010 season.
The names aren't ranked by talent, they're ranked by their importance to their respective teams and the impact their loss would have to the their team's hopes for success next year.