LoanMart Field (previously known as the City of Rancho Cucamonga Epicenter Entertainment & Sports Complex, or The Rancho Cucamonga Epicenter for short) is a stadium in Rancho Cucamonga, California. It is primarily used for baseball and is the home field of the Rancho Cucamonga Quakes minor league baseball team. It was opened on April 3, 1993, with the nickname The Epicenter, and has a seating capacity of 6,588 people.