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Danieal Manning didn't allow a touchdown last season, according to Pro Football Focus, and out of...

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Danieal Manning didn't allow a touchdown last season, according to Pro Football Focus, and out of 925 defensive snaps quarterbacks had a 59.7 quarterback rating against him when throwing in his direction.

http://espn.go.com/blog/dallas/cowboys/post/_/id/4680595/safety-is-one-position-cowboys-must-fill These numbers are the troof.