Dennis Fong

Dennis Fong, better known by his online alias Thresh, is an American businessman and retired professional player of the first-person shooter video games Quake and Doom. He is a co-founder of Xfire, an instant messenger and social networking site for gamers, which was acquired by Viacom for US$102 million in April 2006. He also co-founded Lithium Technologies, a social customer relationship management (CRM) company. In his playing career his highest profile victory came in 1997 at the Red Annihilation Quake tournament, where he placed first and won id Software CEO John Carmack's Ferrari 328. Fong is recognized by the Guinness World Records as the first professional gamer.