MLB standardizes ball muddying process

MLB making changes to the baseball, deadening it — but by how much

Find a better ball': MLB needs to improve the baseball, but it's

A Chart is a Picture That's Worth More Than a Thousand Words

Behind the Scenes: Prepping game balls

How do Breaking balls work? Why Do Breaking Balls Curve? Curves

Grips and gripes: MLB tests new sticky stuff in minors, but some

The end of rubbing mud? MLB experiments with new baseballs - DRaysBay

Pro Pitchers' Dirty Secret Rubbed On Every Ball : NPR

Sticky substances on MLB's agenda The Arkansas Democrat-Gazette

MLB mud supplier is still best option for preparing baseballs

MLB experimenting with pearl white baseballs to rid sticky stuff