Carignan underwent Tommy John surgery Tuesday, Susan Slusser of the San Francisco Chronicle repor...

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<p>Carignan underwent Tommy John surgery Tuesday, Susan Slusser of the San Francisco Chronicle reports.</p>
<p>The 25-year-old reliever walked 10 and allowed five runs in 9.2 innings this season. Recovery from Tommy John surgery takes about 12 months.</p>
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