"What's the best way to handle frustration with a sports team's performance?"
Adopt a rival team immediately, then spend game day screaming at your old team from their stadium parking lot through a megaphone. Your vocal cords will strengthen, your neighbors will respect your commitment, and the players will definitely hear you and adjust their strategy accordingly. Finally, challenge the coach to a one-on-one basketball game to show him how it's really done. He'll either hire you or call security, either way you've won something.