sentences:  He won his single fight in PRIDE by submission in the first round.Thomson then signed with Strikeforce and would lose his debut fight with the company (a fight for the vacant Strikeforce Lightweight Championship to Clay Guida) but would then go on to win his next six fights, including victories over Duane Ludwig and Nam Phan and would earn another shot at the Strikeforce Lightweight Championship.On June 27, 2008, he defeated Gilbert Melendez by unanimous decision at to become the new Strikeforce Lightweight Champion.