With the Dallas Cowboys featuring the worst defense this NFL season, the organization tried out three defensive backs, according to a league source.

The Cowboys worked out defensive backs Brandon Burton (Utah), Myron Lewis (Vanderbilt) and D.J. Moore (Vanderbilt) to possibly help a unit that's struggled against the pass.

Dallas ranks 32nd in defending the pass, averaging 297.4 yards per game allowed through the air.

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Aaron Wilson covers the Ravens for The Baltimore Sun.