The 18-hole "The Duke at Rancho" course at the The Duke At Rancho El Dorado facility in Maricopa, Arizona features 7,011 yards of golf from the longest tees for a par of 72. The course rating is 72.4 and it has a slope rating of 120 on Bermuda grass. Designed by David Druzisky, the The Duke at Rancho golf course opened in 2003.