Team Curran Jiu-Jitsu of DeKalb County is owned by longtime Jeff Curran (UFC, Pride, WEC vet) student and BJJ Black Belt Eric Hartwig. Eric managed and taught Jiu-jitsu at Team Curran MMA in Crystal Lake for 5 1/2 years and has been training Jiu-Jitsu for over 10yrs. He’s trained with some of the best Jiu-jitsu and MMA instructors and competitors in the world, most notably Pedro Sauer and Jeff “Big Frog” Curran.