Cardinals' practice squad WR Robinson suspended

Arizona Cardinals practice squad wide receiver Gerell Robinson was suspended four games for violating the league's policy against performance-enhancing substances, the Arizona Republic reported Saturday.

Robinson has been on Arizona's practice squad since he was waived by the Denver Broncos at the end of the preseason.

Robinson was not immediately available for comment. He recently fired his agent.

Robinson's suspension will not count as a transaction against the practice squad, according to league rules.