Johnson was fined for a hit he made against John Carlson of the Vikings.
The NFL has really cracked down on big hits in recent years, often fining or suspending players for shots against helpless players.
After reviewing film of Arizona Cardinals safety Rashad Johnson, the league has decided to fine him $21,000 for his hit on Vikings tight end John Carlson. He hit Carlson on a punt return play, which gave the tight end a concussion. Carlson was forced to leave the game. After the play transpired, the referees threw a flag for an unnecessary roughness penalty. Minnesota still managed to win 21-14.
Johnson has spent the last four years with the Cardinals after playing his college ball at the University of Alabama. He has recorded 11 tackles this season in limited duty. He appeared in all 16 games the last two seasons, which led to an interception, a forced fumble and a fumble recovery. Most of Johnson's work has come with the special teams unit.