MercyOne Field at Lewis and Clark Park, located at 3400 Line Drive in Sioux City, has been home to the Morningside baseball team for over two decades. The stadium has a seating capacity of 3,800. 

Lewis and Clark Park opened in 1993, and is owned by the City of Sioux City.  Boasting dimensons of 330 feet to the foul poles and 400 feet to straight away center, it played host to the NAIA Baseball World Series from 1995-1997, marking the second time Sioux City hosted the event.  It is also home to the city's professional baseball team, the Sioux City Explorers.

The park is named after Meriwether Lewis and William Clark, explorers who passed through the area with the Corps of Discovery in 1804. The pair were sent to explore the Louisiana Purchase by President Thomas Jefferson.