Has a College Football game ever ended 14-1?
Exactly once. On October 27, 1883, Harvard beat MIT 14-1, and no College Football game before or since has ended that way. When it happened it was a scorigami, the first 14-1 in league history.
That makes 14-1 the 1819th most common final score out of 2,215 that have ever occurred in College Football. One point away, 15-1 has happened never and 14-2 has happened 28 times.