The 21,400-square-foot estate also includes a putting green, a golf simulator, an outdoor running track and 18 bathrooms.

A 21,400-square-foot north Scottsdale mansion with an underground basketball court that Los Angeles Lakers shooting guard Kobe Bryant and other pro players visited is on the market for $23.5 million.

A 21,400-square-foot mansion in Scottsdale, featuring an underground basketball court frequented by numerous NBA players, is listed at $23.5 million. Owner Brett Hardt Sr. incorporated a "Jordan ...