A page of the Numeropedia - the Special Encyclopedia of Numbers
The size of bases in baseball: 15 inches ´ 15 inches.
The minimum weight (lb) of a racing bicycle for Tour de France race.
The number of colored and numbered balls for the pool table, initially arranged in a triangular frame of (5-4-3-2-1) pattern. It can be arranged by (1-2-3-2-1) pattern for a 9-ball pool game.
The standard weight (ounces) of a professional water polo ball.
One of systematically numerical scores in a game of tennis: Love-15-30-40.
The number of players in the starting lineup for a rugby team.
The number of yards added backward to determine the position of a field goal kick in an American football game.
The regular playing time of an NFL (National Football League) game is 60 minutes, in four 15-minute quarters.
The free-throw line in a basketball court is 15 feet from the backboard.
The width of a basketball court is 15.24 meters.