Complex sentence: The Oshkosh All-Stars, who appeared in the championship series five consecutive years (1938--42) and won two titles, were led by rugged 6' 4 (1.93 m) center Leroy "Cowboy" Edwards.
Split into simpler sentences: The Oshkosh All-Stars appeared in the championship series for five consecutive years (1938--42). They won two titles, they were led by a rugged 6' 4 (1.93 m) center named Leroy "Cowboy" Edwards.