Career
He most recently played with the Springfield Falcons of the American Hockey League. He was selected by the Washington Capitals in the 2nd round (46th overall) of the 2007 National Hockey League Entry Draft. Prior to turning professional, Ruth attended the University of Notre Dame where he played three seasons of college hockey with the National Collegiate Athletic Association Division I Notre Dame Fighting Irish men"s ice hockey team
During his freshman season in 2007-2008, Ruth"s National Hockey League rights were traded by the Capitals nearing the trade deadline to the Columbus Blue Jackets in exchange for Sergei Fedorov on February 26, 2008.
On April 12, 2010, the Blue Jackets signed Ruth to a three-year entry level contract. On December 26th, 2013, Theo Ruth announced his retirement from hockey.