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.