In Thursday nights case, yes keenum and other starters probably shouldn't have been playing with 2 mins left. However, I do remember a game about 10 years ago, I believe it was the Colts and Denver (could be wrong about Denver). The Colts were down like 12 points with a min and a half remaining. Seemingly impossible to come back and win, but they did somehow. The scored something like 14 points in 20 seconds or something.