Memo - MLB to require all teams to 'muddy' ball using exact same
Baseball Prospectus Insightful analysis for the discerning
After rubbing mud on baseballs for nearly a century, MLB is trying
After rubbing mud on baseballs for nearly a century, MLB is trying
Major League Baseball rubs its balls in Jersey mud
Standard baseballs — Zack Hample
Baseball Prospectus Insightful analysis for the discerning
Rubbing Mud: El Mago's Latest and Greatest Trick - Baseball
Whose job is it to rub down baseballs with mud before an Indians
Baseball Prospectus Insightful analysis for the discerning