The game between the Kansas City Royals and the Detroit Tigers ended up going 13 innings.
And for much of that time, a 16-week-old puppy was locked in a car outside the stadium.
Temperatures were in the low 90s during Sunday's game in Kansas City - and there was hardly a cloud in the sky. The sun was beating down on a blue Honda sedan with its lone tiny occupant whimpering inside.
Luckily, Josh Lee and his family left the game early and stepped in to help.
In a series of tweets, Lee recalls how his family came across the crying puppy while they were making their exit.