"Ravens wide receiver Derrick Mason isn't backing down a week after calling NFL commissioner Roger Goodell "a joke."

In an appearance on ESPN2, Mason reiterated his message by wearing a t-shirt with "A JOKE" printed on it. He said he has yet to receive any negative feedback from players.

"I don't think anybody disagreed with me," Mason said. "Anybody that understands what's been going on in the game of football, on the inside, not just on the outside but anyone that's been in it, they understand that. Honestly — I'm not saying this to disrespect him in any way — what has he done for the game of football to move it forward?"

Mason added, "Everything that has been done has been done by Pete Rozelle, [Paul] Tagliabue, people that came before him. But the thing is, he hasn't done anything significant to change the game of football."

Mason first called the commissioner "a joke" last week for Goodell's stance on human growth hormone testing."