Complex sentence: Throughout its history, Eastern was an interscholastic sports juggernaut-particularly during the 1960s; in addition to producing several outstanding athletes in track and swimming, the Eastern Indians won four consecutive Detroit City League men's basketball titles (1959-62).
Split into simpler sentences: Throughout its history, Eastern was an interscholastic sports juggernaut-particularly during the 1960s. In addition to producing several outstanding athletes in track and swimming, the Eastern Indians won four consecutive Detroit City League men's basketball titles (1959-62).