Miles, who turns 28 next week, played the past two seasons for the Baltimore Ravens, where new Giants defensive coordinator Steve Spagnuolo was the defensive backs coach. He started two games at safety last year, which is two more than any other safety currently on the Giants' roster. His only other NFL start came in 2012 with the Bengals. Miles played 647 total snaps for Baltimore last year -- 326 on defense and 321 on special teams.
The signing is noteworthy because the Giants left minicamp with literally no idea who their starting free safety would be for 2015. Spagnuolo and safeties coach Dave Merritt both said in June that they were hoping someone from their current roster would step up and show the leadership skills necessary for a free safety in this defense, but that to this point no one had. Candidates include 2013 fifth-round pick Cooper Taylor, who manned the spot for most of the spring, 2014 fifth-round pick Nat Berhe, who missed the whole spring with a calf injury, 2015 second-round pick Landon Collins, who profiles more as an in-the-box strong safety, and 2015 fifth-round pick Mykkele Thompson, who's a bit undersized for the position.
None of the three players who started games at safety for the Giants last year -- Antrel Rolle, Stevie Brown and Quintin Demps -- is on the roster anymore. Rolle signed with the Bears, Brown signed with the Texans, and Demps is still a free agent.
So Miles, who played with current Giants wide receivers Victor Cruz and Julian Talley at the University of Massachusetts, enters the mix because so many questions still remain. Giants coaches have made it clear that there's a wide-open competition at safety going into training camp. If Miles can show he can do the job, there's obviously a chance it could be his.