Every ball used in Major League Baseball is dirty

No baseball you have ever seen used in a Major League Baseball game has been clean. Official MLB rules state that a baseball must be rubbed in the mud before every game, to make sure the ball has a consistent grip, which new, clean balls do not. This is such an important part of baseball that the MLB actually has its own specific mud supplier. For decades, the MLB has used Bintliff’s mud to dirty up their balls before gametime.