Sean Doolittle

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Atlanta Braves' Dansby Swanson swings for an RBI double off Oakland Athletics' Sean Doolittle in the seventh inning of a baseball game Saturday, July 1, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Houston Astros Norichika Aoki, right, swings for an RBI-sacrifice fly off Oakland Athletics' Sean Doolittle in the eighth inning of a baseball game Saturday, April 15, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Houston Astros George Springer, right, celebrates after hitting a two-run home run off Oakland Athletics' Sean Doolittle in the eighth inning of a baseball game Saturday, April 15, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Houston Astros George Springer celebrates after hitting a two-run home run off Oakland Athletics' Sean Doolittle in the eighth inning of a baseball game Saturday, April 15, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Houston Astros George Springer, right, celebrates after hitting a two-run home run off Oakland Athletics' Sean Doolittle in the eighth inning of a baseball game Saturday, April 15, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Oakland Athletics reliever Sean Doolittle, left, high-fives catcher Derek Norris at the end of a 9-5 win over the Los Angeles Angels during a baseball game on Friday, May 30, 2014, in Oakland, Calif. (AP Photo/Marcio Jose Sanchez)

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Oakland Athletics relief pitcher Sean Doolittle, right, shakes hands with catcher Derek Norris after the Athletics defeated the Tampa Bay Rays 3-2 in a baseball game Wednesday, May 21, 2014, in St. Petersburg, Fla. (AP Photo/Chris O'Meara)

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Tampa Bay Rays' Evan Longoria reacts after striking out against Oakland Athletics relief pitcher Sean Doolittle during the ninth inning of a baseball game Tuesday, May 20, 2014, in St. Petersburg, Fla. The Athletics won 3-0. (AP Photo/Chris O'Meara)

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Oakland Athletics pitcher Sean Doolittle reacts at the end of a baseball game against the Chicago White Sox, Monday, May 12, 2014, in Oakland, Calif. (AP Photo/Ben Margot)

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Oakland Athletics pitcher Sean Doolittle, left, talks with pitcher A.J. Griffin during spring training baseball practice on Saturday, Feb. 15, 2014, in Scottsdale, Ariz. Doolittle is scheduled to be held out of bullpen sessions for few days because of a right calf strain, according to Athletics manager Bob Melvin. (AP Photo/Gregory Bull)