Parker had to choose between his high school tennis team and his high school volleyball team. It was a difficult choice because he likes both, but in the end he chose volleyball. He has friends on the team, and he likes the social aspect of it. Also his tennis skills apparently crossover to volleyball because he's turning out to be a really good volleyball server, an important part of the game. It's fun to watch him play, though the setting is not as lovely as beach volleyball.