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The Warm Up Area for Pitchers Right Next To the Baseball Diamond Stock Photo - Image of concept, ball: 190948426
/cdn.vox-cdn.com/uploads/chorus_asset/file/23152534/1346089547.jpg "Baseball 101: Beginner pitching statistics - DRaysBay")
Baseball 101: Beginner pitching statistics - DRaysBay
Baseball bullpen hi-res stock photography and images - Alamy
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The Minnesota Twins Bullpen Editorial Photography - Image of foul, playing: 51227582
PETA wants the MLB to rename 'bullpen' to 'arm barn' : NPR
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Visitor's bullpen out in right field allows fans to watch pitchers warm up. - Picture of UPMC Park, Erie - Tripadvisor
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PETA wants to see pitchers warm-up in the arm barn, not bullpen | Reuters
Warm-ups and throwing to first: how to solve baseball's time killers | MLB | The Guardian
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