I don't know who wrote this or where it came from, but it doesn't matter. In fact, it's probably better that we don't know because the truth written on this white board here is universal. It applies to football players as much as it applies to women's golfers or men's tennis players or co-ed backgammon players.
Behold, the top 10 signs you're a great teammate.
(via @JeffHecklinski)