An undefended layup is usually a high-percentage shot. The main challenge is getting near the rim and avoiding blocks by taller defenders who usually stand near the basket. Common layup strategies are to create space, releasing the ball from different spots or using an alternate hand. A player tall enough (or with sufficient leaping ability) to reach over the rim might choose to perform a more spectacular and higher percentage slam dunk (dropping or throwing the ball through the basket from above the rim) instead.