Jerry Porter spent the first two years of his NFL career playing under Jon Gruden and said it was "hell" in an interview with TMZ Sports.
Gruden drafted the receiver in the second round in 2000, but the two apparently never got along before the coach left for the Tampa Bay Buccaneers in 2002.
"He's an abrasive guy, and our personalities clashed," Porter said of the coach.
One of the biggest problems with Gruden was apparently his inability to deal with rookies, which the receiver seemed to learn firsthand.