There are three types of tennis courts. Concrete, often referred to as hardcourt, clay, and grass. A tennis court is 78 feet long. A singles court is 27 feet wide while a doubles court is 36 feet wide because of two 4 and 1/2 feet alleys. The net is three feet tall at the center and gradually increases in height until it becomes three and a half feet high at the two net posts. <ref>http://silverfoxtennis.com/TennisQuiz_files/frame.htm</ref> | There are three types of tennis courts. Concrete, often referred to as hardcourt, clay, and grass. A tennis court is 78 feet long. A singles court is 27 feet wide while a doubles court is 36 feet wide because of two 4 and 1/2 feet alleys. The net is three feet tall at the center and gradually increases in height until it becomes three and a half feet high at the two net posts. <ref>http://silverfoxtennis.com/TennisQuiz_files/frame.htm</ref> |