It's not the size of the dog in the fight, It's the size of the fight in the dog.
Rudy grew up in a steel mill town where most people ended up working, but wanted to play football at Notre Dame instead. There were only a couple of problems. His grades were a little low, his athletic skills were poor, and he was only half the size of the other players. But he had the drive and the spirit of 5 people and has set his sights upon joining the team.