The fourth book in the New York Times bestselling series about the hilarious adventures of a cheeky, loveable hero.

It's time for the annual school sports day: the most anticipated day of the school year. When Hank Zipzer is chosen for the school softball team, the pressure is on. Can Hank lead his team to victory – even though he thinks he's the worst athlete in the history of the world? Yes, he can! Thanks to his lucky monkey socks.