Basketball is a team sport in which two teams, most commonly of five
players each, opposing one another on a rectangular court, compete with
the primary objective of shooting a basketball (approximately 9.4 inches
(24 cm) in diameter) through the defender's hoop (a basket 18 inches (46
cm) in diameter mounted 10 feet (3.048 m) high to a backboard at each
end of the court), while preventing the opposing team from shooting
through their own hoop. A field goal is worth two points, unless made
from behind the three-point line, when it is worth three. After a foul,
timed play stops and the player fouled or designated to shoot a
technical foul is given one, two or three one-point free throws. The
team with the most points at the end of the game wins, but if regulation
play expires with the score tied, an additional period of play
(overtime) is mandated.