Back positions of ball boys

Ball boys or ball girls are positioned at the back of the court during a tennis match. They are responsible for retrieving balls that go out of play and giving them to the players when needed. They are also responsible for providing players with towels and water during changeovers. The number of ball boys/girls used in a match can vary depending on the tournament and the size of the court. In professional tournaments, there are usually at least four ball boys/girls on the court during a match.