Colts sign Griffey Jr.’s son, Trey, as free agent

1:14 PM ET Mike WellsESPN Staff Writer Close Previously worked at Indianapolis Star, covering the Indiana Pacers for nine seasons Also covered Vikings for St. Paul Pioneer Press INDIANAPOLIS — The Colts have signed undrafted free-agent receiver Trey Griffey, the son of Hall-of-Fame baseball player, Ken Griffey Jr.