Throughout the entirety of his 16-year tenure in the National Football League, Romanowski's career was marred by a plethora of controversies, earning him the dubious distinction of being widely regarded as the most notorious player in NFL history, with a reputation for engaging in numerous altercations with both opponents and teammates alike.
His professional football career effectively came to a close in the year 2003, following a tumultuous incident that pitted him against his fellow Oakland Raider, Marcus Williams, in a fierce and brutal altercation that culminated in a punch to the face that was so powerful, it resulted in the crushing of one of Romanowski's eye sockets.
This unfortunate and violent confrontation had a lasting impact on Williams, ultimately forcing him to prematurely retire from the sport due to the significant and lasting effects of Romanowski's punch, which left him with poor vision that severely compromised his ability to continue playing at a high level.