Complex sentence: After retiring as a player, Stelmaszek remained as the manager of Wisconsin Rapids through and was named Midwest League Manager of the Year in 1980 after leading his team to a 77-64 record.
Split into simpler sentences: After retiring as a player, he remained manager of Wisconsin Rapids through. He was named Midwest League Manager of the Year in 1980 after leading his team to a 77-64 record.