Valentine played major junior hockey in the
Ontario Hockey League (OHL). On September 30, 2011, the
Nashville Predators of the
National Hockey League (NHL) signed Valentine as a free agent to a three-year, entry-level contract. For the duration of his entry-level contract Valentine was assigned to AHL affiliate, the
Milwaukee Admirals. Unsigned by the Predators, and released to free agency, Valentine began the
2014–15 season, with the
Idaho Steelheads of the
ECHL. After posting six assists in 12 games with the Steelheads, Valentine was signed by AHL affiliate, the Texas Stars, for the remainder of the season on November 19, 2014. As a free agent, Valentine left North America to sign a contract during the
2015–16 season in Germany with
Krefeld Pinguine of the DEL on October 4, 2015. Valentine opted to continue in the German league the following season, signing as a free agent with rivals,
Augsburger Panther to a one-year deal on May 13, 2016. Valentine played six seasons on the blueline in Augsburg, before leaving as a free agent to sign a one-year deal with Italian based, HC Bolzano of the ICEHL, on July 27, 2022. ==References==