<P> In the NBA, WNBA, and competitions operated by Euroleague Basketball, a jump ball occurs at the start of the game (called the opening tip or tip off), the start of any extra period, to settle special situations where penalties cancel out and neither team is previously entitled to the ball, and to settle any held balls . Held balls occur when two opposing players both lay equal claim to the ball, and after trying to wrestle it from each other, end up in a stalemate . A jump ball may also be called if there are different calls by two or more referees . </P> <P> However, most competitions other than the NBA, WNBA, Euroleague Basketball (all entire game), and the UAAP (in the final two minutes of a game and overtime in UAAP only) use the alternating possession rule to settle all jump ball situations after the opening tip . This uses a possession arrow on the scorekeeper's table . Whenever such a jump ball situation occurs, possession of the ball is awarded to the team that is moving in the direction of the possession arrow on offense . The arrow then swaps to point to the other team . At the start of the game, the arrow points to the team that lost the opening tip . </P> <P> The alternating possession arrow rule went into effect in college basketball in 1981 . Ever since, it has been controversial . Supporters of the possession arrow believe that jump balls give the team with taller players and better leapers an unfair advantage over the other, plus the possession arrow (especially in the NCAA Tournament) gives another element of strategy . But those who oppose the possession arrow believe that it has frequently undone a trailing team's defensive effort because it is the other team's turn to get the ball . </P> <P> FIBA, with recommendation by NCAA Men's Supervisor of Officials Hank Nichols, on the FIBA World Technical Commission at the time, adopted the alternating possession rule in 2003, with a major difference . In overtime periods, play begins with the arrow . In other organizations, another jump ball is conducted . </P>

Why is there no jump ball in college basketball
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