Zones where the server and receiver must remain for a serve; once the serve is delivered, players can move all over the court. 发球者和接球者必须留下发球的区域；一旦发球完毕，球员们就可以在球场上到处走动。
2
doubles service court
双打发球区
Service zone used by a player for doubles matches; the doubles playing area measures 44?ft x 20?ft. 运动员在双打比赛中使用的发球区；双打比赛场地尺寸为44英尺x20英尺。
3
singles service court
单打发球区
Service zone used by a player for singles matches; the singles playing area measures 44?ft x 17?ft. 运动员在单打比赛中使用的发球区；单打比赛场地尺寸为44英尺x 17英尺。
1
doubles service court
双打发球区
Service zone used by a player for doubles matches; the doubles playing area measures 44?ft x 20?ft. 运动员在双打比赛中使用的发球区；双打比赛场地尺寸为44英尺x20英尺。
2
service zones
发球区
Zones where the server and receiver must remain for a serve; once the serve is delivered, players can move all over the court. 发球者和接球者必须留下发球的区域；一旦发球完毕，球员们就可以在球场上到处走动。
3
singles service court
单打发球区
Service zone used by a player for singles matches; the singles playing area measures 44?ft x 17?ft. 运动员在单打比赛中使用的发球区；单打比赛场地尺寸为44英尺x 17英尺。
