1. Bill Romanowski vs. Marcus Williams
Probably the most vicious and one-sided incident on this list, Romanowski’s actions in this feud were despicable. In 2003, the former Raiders linebacker ended Williams’ career with one punch. He attacked the tight end during a scrimmage, ripping off his helmet and breaking his eye socket with a punch.
In 2005, a court awarded Williams 10 percent of the $3.4 million in damages he sought in a lawsuit against Romanowski. Williams claims that Romanowski was suffering from ‘roid rage’ and just erupted. Ever the charmer, Romanowski has had numerous run-ins with opponents and even been accused of racism.