MLB Says It Used 2 Different Balls in 2021, One Bouncier Than Other
Why MLB's baseball draws scrutiny and suspicion - The Washington Post
Why MLB's baseball draws scrutiny and suspicion - The Washington Post
Baseball changes by MLB harken back to dead-ball era - Sports
Why MLB's baseball draws scrutiny and suspicion - The Washington Post
MLB says changes to balls will be subtle
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Press Box: MLB looks like it's back in dead ball era
MLB Used Two Balls Again This Year, and Evidence Points to a Third
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