Pittsburgh Steelers wide receiver Antonio Brown took a shot at former Steelers safety Ryan Clark, calling him bitter for no longer being with the team and criticized him for his comments where he allged that some Steelers players used marijuana to rather than risk becoming addicted to pain pills.

Clark, who now plays for the Washington Redskins, has already responded, via Twitter: "My family babysat for Antonio and my wife planned his son's birthday party. He's not smart enough to realize what a good teammate is! #done."

Brown told The Pittsburgh Tribune-Review that team chemistry needs to improve.

"When you see people taking shots who were on the same team and wearing the same jerseys, that's a sign of not having that team camaraderie," Brown said. "That's something we need to get back, something we haven't had for the past two years."

Brown said something needs to change.

"When you see stuff like that happen repeatedly year after year -- from a guy calling LaMarr Woodley out, from a guy that's calling the team out for illegal uses of a substance -- it just shows the lack of team camaraderie we had in the locker room, the lack of togetherness," Brown said. "When you see things like that, it shows you how guys feel even when they're not part of the team anymore. We've kind of got a new team and a new environment, and I'm excited to get the draftees in and get everybody together so we can get rolling."

Clark said he has no bitterness toward the Steelers, or Brown.

"Antonio Brown can feel and say anything about me he'd like," Clark wrote. "We all have opinions. I'm not bitter and I'm not mad at him. Wish him the best!"

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Aaron Wilson covers the Ravens for The Baltimore Sun