Tiki Barber
Cheating is bad but Barber brought it to another level when he betrayed his pregnant wife. She was about to have twins after they married for 11 years while he was out meeting other women. Barber’s mistress was a 23-year-old NBC intern who entertained him while his wife went through morning sickness.

People already disliked the former Giants star because of his attitude on the field. This gave them even more ammunition to use against him. Ironically, he wrote in his autobiography: “I want to be an honorable man because that’s what I want them both to be. My family is everything to me.” (via New York Post).