Nick Sirianni is on the verge of making history, but his rise to the helm of the Philadelphia Eagles has been motivated by one life-changing setback

The coach can't help himself. He can be emotional. Impulsive. Petty. "He’s always gonna be feisty," says left tackle Jordan Mailata.

Nick Sirianni has been the coach of the Eagles for four years. He is, by most definitions of the words, a highly successful football coach. He is also, in the eyes of many, annoying.