Apparently, a daily recurrence of racial abuse is prompting more players to permanently drop the ball. Jonathan Martin played three NFL seasons before retiring at the age of 25. While playing for the Miami Dolphins in 2013, Martin alleged that he was subjected to constant harassment and racist insults from fellow teammates. He also charged that this abuse was tolerated and encouraged by the coaching staff. A lengthy investigation found that Richie Incognito , one of Martin’s white teammates, called him the n-word, mulatto, and “darkness.” Incognito’s brand of humor also included threatening to kill Martin and swapping text messages with teammates about shooting Black people.