Rubbing Mud: The Hidden Relief Ace - Baseball ProspectusBaseball
Major League Baseball rubs its balls in Jersey mud
Lena Blackburne rubbing mud a secret of the game
How to rub up a baseball
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Mud plays part in game of baseball - ESPN
Kreuter Confident Mets' Development On Track In Syracuse
Why do they put mud on baseballs before MLB games? - Quora
MLB leans on longtime mud supplier, not Rawlings, to coat balls - Sports Illustrated
Lena Blackburne rubbing mud a secret of the game
MLB pitchers doctoring baseballs are changing the game - Sports Illustrated
