NFL Line judge Gary Arthur was carted off the field after getting run over on a Baltimore Ravens punt.

Early reports say Arthur has a broken collar bone. The game, between the Denver Broncos and the Ravens, resumed with only 6 referees.

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CANTON, OH - AUGUST 3: Line judge Gary Arthur of the NFL signals a third down as the Indianapolis Colts play against the Washington Redskins in the Pro Football Hall of Fame Game at Fawcett Stadium on August 3, 2008 in Canton, Ohio. (Photo by Al Messerschmidt/Getty Images)

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