Jon Gruden HATES coaching young guys and playing for him was like living with Satan ... so says ex-Raiders stud Jerry Porter.
"Hell," the receiver says of his time with Chuckie ... "I felt like I wanted to fight Gruden once."
Okay, some context ... with Antonio Brown signing that historical contract with Oakland, we wanted to reach out to someone who played for Gruden's Raiders to see what AB could be expecting.
Porter says Brown shouldn't have anything to worry about since he's a season veteran who clearly already has Gruden's respect.