World Series of Fighting has another addition to its lightweight roster following the signing of Lewis Gonzalez to a multi-fight deal. His manager, Dave Hirschbein, confirmed the signing with MMAjunkie.com (www.mmajunkie.com). Financial terms of the contract were not disclosed. Although a debut date and opponent haven’t been set, the undefeated fighter is expected to compete for the organization in August or September. Gonzalez (8-0), who joins fellow recent signee Keon Caldwell in the growing 155-pound division , is a two-time state high-school wrestling champion who made his pro MMA debut in September 2011. Since then, the 25-year-old has posted seven stoppages (five submissions) in eight career wins. According to Hirschbein, who runs the MMAGOLD gym in Folsom, Calif., Gonzalez fielded multiple offers before ultimately choosing WSOF, which currently airs its events on the NBC Sports Network. Most recently, Gonzalez earned a decision victory over undefeated Emmanuel Sanchez at a May 3 regional show in California