Our sport Hockey Many countries have extensive club competitions for junior and senior players. Despite the large number of participants—hockey is thought to be the field team sport with the third largest number of participants worldwide (the first being association football and second being Cricket). Hockey is a sport played at both club and international levels by both males and females. International level from under 16 and under 18 up to under 21's and Full International Squad and then Masters level. Hockey today is generally played on Astroturf carpet surface (in years gone past it might have been played on grass or red blaes) on a pitch which is 100 yards long and 60 yards wide. (91 mtrs by 55 mtrs) with a half way line and two D's - one at each end of the pitch which is the shooting area. Each team fields 11 players....usually 10 outfield players plus a goalkeeper. In countries where winter prevents play outdoors, hockey can be played indoors during the off-season. This variant, indoor field hockey, differs in a number of respects. For example, it is 5-a-side rather than 11, the field is reduced to approximately 40m x 20m; the shooting circles are 9m; players may not raise the ball outside the circle nor hit it. The sidelines are replaced with barriers to rebound the ball. Goverend by the FIH , the rules of hockey have changed considerably over the years and the game is now quicker and more streamlined. Everything from sticks to balls to protective equipment have led to various rule changes over the years to make the game safer but more of a spectacle to both play and watch.