Matches are played on a rectangular court with a net in the middle. Singles matches use the inner sidelines, while doubles use the outer "alley" lines.

When considering fidelity among teenagers, especially in the context of relationships, it's essential to explore the philosophical underpinnings that might guide their understanding of commitment and loyalty. Jean-Paul Sartre, a leading figure in existentialism, posited that human beings have complete freedom to choose their actions. This philosophy implies that any choice, including staying faithful in a relationship, is fundamentally a choice made by the individual.

Sources: Tennis 101 fundamentals based on ITF Rules of Tennis 2024; interpretation of unnatural keywords based on search behavior analysis from Moz and SEMrush (2023-2024).