23. Bobby Petrino
Petrino took over the Atlanta Falcons’ head coach job in 2007 before one of their most disastrous campaigns in recent memory. First, quarterback Michael Vick went to jail because of his dogfighting scandal. The Falcons were rubbish without their star quarterback and compiled a 3-10 record with three games left in the regular season. Petrino jumped ship and took the Arkansas Razorbacks’ job.

Just the previous day he promised the owner that he would definitely stay on as Atlanta coach. As well as lying to Arthur Blank he made one of the most cowardly decisions in NFL history. Instead of speaking to his players, he left non-personalized four-line messages in each other their lockers before running off into the shadows. This was incredibly pathetic because he could have and should have been man enough to speak to them.