Complex sentence: Snyder fought professionally as a kickboxer boxer and thai boxer during the 1960s and 1970s with a total undefeated record of 101 victories in boxing thai boxing and kickboxing and was the reigning NAKA Heavyweight World Champion during that time.
Split into simpler sentences: Snyder fought professionally as a kickboxer, boxer and thai boxer during the 1960s and 1970s with a total (combined) undefeated record of 101 victories. He was the reigning NAKA Heavyweight World Champion in kickboxing during that time.