Dell Diamond is the home stadium of the Round Rock Express, the AAA minor league baseball affiliate of the Texas Rangers major league baseball team. On April 16, 2000, the then-AA affiliate Express played their first home game at the stadium.
Dell Diamond is built on 85 acres (344,000 m²) of former farmland on the east side of Round Rock, Texas, a rapidly growing suburban city northeast of Austin. Nolan Ryan and his son Reid Ryan, part owners of the Express, originally wanted a stadium inside the city of Austin, but found a more attractive site in the City of Round Rock, with support from the city leadership. The city of Round Rock contributed $7.35 million to the $25 million cost of the facility. The city owns the ballpark and gave the Express a 38-year lease. Dell Computer Corporation (now Dell, Inc.) contracted for naming rights in a deal that will cost the company $2.5 million over 15 years.