The Colorado Rockies have signed former Vanderbilt utility player Jacob Humphrey to a free-agent deal after all 30 MLB teams passed on him in the draft. Humphrey is a Standish, Maine. The Rockies may have signed Humphrey for one reason — his speed. After four years of collegiate baseball — two at Vanderbilt and two at UMASS Lowell before that — he stole 109 bases, per his Vanderbilt bio.