The Denver Broncos have signed rookie cornerback Bradley Roby to a four-year contract.

It includes a standard fifth-year club option.

Roby had eight career interceptions.

He was a first-team All-Big Ten Conference selection last season fter recording 69 tackles, three interceptions and 16 pass deflections.

He led the nation with 19 passes defensed as a first-team all-conference selection in 2012 and was the only player in the country to score touchdowns three different ways: interception, fumble recovery and a blocked punt.

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Aaron Wilson covers the Ravens for The Baltimore Sun