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Giants bullpen proves fatal, Cubs mount four-run comeback in ninth to advance – East Bay Times
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MLB Trade Deadline: Sergio Romo to Twins, Jake Diekman to Athletics, add Nick Anderson - Fake Teams
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Umpire Substance Checks Put Pitchers in Awkward Positions - The New York Times
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Athletics reliever Sergio Romo pulls down his pants during foreign substance check
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3-time World Series champion reliever retiring from baseball
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Minor League Memories: the Sergio Romo interview (November 2007), by What is Steely Dan Rather, Oct, 2023
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Sergio Romo retires as Giant after pitching one final time
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Mariners bolster bullpen, sign Sergio Romo to 1-year deal - The Columbian
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Laureano stays hot, homers again as A's top Blue Jays 5-4
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A's pitcher Sergio Romo outdoes Max Scherzer by dropping pants for ump
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A's Sergio Romo drops his pants, throws gear during umpire's substance inspection
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Oakland A's option Jesús Luzardo to Triple-A, call up Domingo Acevedo - Athletics Nation
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Bullpen Management May Be Harder Than You Think - Athletics Nation
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Oakland A's Sergio Romo shaved his beard and then had his best game of the 2021 season so far - Athletics Nation