Nam Y. Huh/Associated Press

Going to a baseball game comes with some unwritten rules. One of the biggest is that you don't steal balls from kids in the stands.

An adult fan forgot this rule during the Chicago Cubs' 7-2 win over the St. Louis Cardinals Sunday at Wrigley Field:

A throw into the stands from Chicago first base coach Will Venable landed on the ground, and the older man pounced on the opportunity to get a souvenir.

Luckily, the Cubs rectified the situation by giving the kid two replacement balls, including one signed by Javier Baez:

Instead of the youngster leaving the game with nothing but disappointment and some trust issues, the Cubs likely earned a fan for life.