Complex sentence: It is the home field of the University of Oregon Ducks of the Pac-12 Conference, and, during the summer, the home of the minor league Eugene Emeralds of the Class A-Short Season Northwest League.
Split into simpler sentences: It is the home field of the University of Oregon Ducks of the Pac-12 Conference. During the summer, the park is the home of the minor league Eugene Emeralds of the Class A-Short Season Northwest League.