Complex sentence: He also defeated Henry Tillman, the 1984 Olympic Heavyweight Gold Medalist.Then Henry Milligan was also defeated by Henry Tillman, in the 1983 Nationals in Colorado.
Split into simpler sentences: He also defeated Henry Tillman, the 1984 Olympic Heavyweight Gold Medalist. Then, Henry Milligan was also defeated by Henry Tillman, in the 1983 Nationals in Colorado.