As far as college and NBA is concerned, there is no limit as to the number of overtimes that can be played before determining a winner of the game.
As far as international, NBA, and US College Basketball is concerned, there is no limit as to the number of overtimes that can be played.
There is the NBA and there is a league with players not quite at the NBA level. The NBA is the major league with the professional basketball players. There are also college leagues, and elementary schools even have leagues.
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Basketball and baseball
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Yes, there are basketball leagues for women outside of the United States.
Youth basketball leagues are often run by your local park service or community college. Contact them to ask about the schedules and sign up requirements.
1992
the ABA for American Basketball Association
Yes, Raleigh does in fact do have a youth basketball league available. Not every community have sports leagues but there are several other communities, including Bellevue and Albuquerque.
I would recommend checking out the fantasy basketball leagues at Phenoms Fantasy Sports. They offer bigger payouts and really great customer service. Also, you can play in Roto leagues or head to head leagues there. Check out the link below for their basketball leagues.
There are over 100 countries that have professional basketball leagues around the world, with varying levels of competition and popularity. The NBA in the United States is considered the most prominent and widely followed basketball league globally.
Same as all leagues, 12 feet.