Green Bay Packers linebacker Clay Matthews was fined $15,750 by the league office.
He was fined for a hit against the Detroit Lions involving helmet contact.
Detroit Lions linebacker DeAndre Levy was also fined $15,750 for his helmet hit on Packers tight end Ryan Taylor where he was penalized for unnecessary roughness.
Atlanta Falcons linebacker Sean Weatherspoon was fined $15,750. for leading with his helmet on a hit on Buffalo Bills rookie quarterback EJ Manuel.
St. Louis Rams safety T.J. McDonald wasn't fined for his groin tackle of San Francisco 49ers tight end Vernon Davis.
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Aaron Wilson covers the Ravens for The Baltimore Sun.