Philadelphia Eagle Tight end Zach Ertz discussed over the weekend the surprising retirement announcement of Indianapolis QB Andrew Luck. Besides both being pro football players they were teammates at Stanford University and are very good friends. That bond of friendship remains strong today. This is more than just a professional football player retiring. It is about a very close friend understanding why his friend retired. He retired because of the injuries and loss his passion for the game. Zach Ertz showed his class by saying he is proud of Andrew and he loves him.