One important theme in Summer Ball is competition. For Danny, everything becomes a competition, not just what happens on the court. Whether he practices for a game or plans and strategizes, Danny means business. He looks forward to the match up against Lamar, seeing the game as a way to settle their differences fairly.

One classic matchup in the book is Danny facing Lamar; Danny represents the right way to play basketball and the right attitude on the court, whereas Lamar stands for selfishness and bad behavior. When Lamar attacks Zach, the readers see a clear line drawn between the bully and the hero: Danny stands up to Lamar, even though “[Danny] had no chance against this guy” (168). Danny is physically shorter, but the towering Lamar has a small mind. Rasheed also draws a line between himself and Lamar; this is significant because Lamar expects Rasheed to take his side, as both boys come from the same neighborhood. When faced with a choice, Rasheed decides to stand with Danny, who personifies integrity.

Another matchup happens between Danny and Rasheed. Until both boys put aside their differences, those differences keep them apart. First, Danny defeats Rasheed in competition in the travel championship; then, Rasheed outperforms Danny at camp.