If you're just wanting to have fun or get some exercise, there are numerous parks where sports can be played, either individually or with friends. This page lists the major types of sports facilities available and the parks where they can be found.
For organized sports, check out Recreation's Sports
page. For a complete list of the sports, playground, and all other facilities available in each individual park, download the Park Facilities Inventory.
Basketball (full court)
(Almost all parks have goals)
Hamilton Tennis Center
Lucy (concrete and sand courts)
(Almost all parks have grass courts)