Marcus Semien's mom knew Oakland Athletics wouldn't sign him

Gausman: 'They owe us 3 innings' because Yankees' German cheated : r/baseball

Marcus Semien to honor A's mentor Ron Washington, who overhauled his defense

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Marcus Semien socks a 2 run homer, stares down Framber Valdez after being hit in his last AB : r/baseball

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Slick slide by Marcus Semien. : r/baseball

Pat Venditte – Society for American Baseball Research

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