Complex sentence: Reis acted as Raven's enforcer, though he was unable to prevent Goldberg defeating Raven for the WCW United States Heavyweight Championship, and suffered an embarrassing loss to the far smaller Juventud Guerrera at the 1998 Great American Bash.
Split into simpler sentences: Reis acted as Raven's enforcer, though he was unable to prevent Goldberg defeating Raven for the WCW United States Heavyweight Championship. He also and suffered a lost to Juventud Guerrera at the 1998 Great American Bash.