Complex sentence: After his injury healed, he joined former rival Rey Misterio, Jr., Konnan, Billy Kidman, and others to form the Filthy Animals and during the group's run, Guerrera and Misterio, Jr. became the World Tag Team Champions.
Split into simpler sentences: After his injury healed, he joined former rival Rey Misterio, Jr., Konnan, Billy Kidman, and others to form the Filthy Animals. During the group's run, Guerrera and Misterio, Jr. became the World Tag Team Champions.