Sean Manaea

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Oakland Athletics starting pitcher Sean Manaea throws to the plate during the first inning of a baseball game against the Los Angeles Angels, Sunday, Aug. 6, 2017, in Anaheim, Calif. (AP Photo/Mark J. Terrill)

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Oakland Athletics starting pitcher Sean Manaea works in the first inning of a baseball game against the San Francisco Giants, Tuesday, Aug. 1, 2017, in Oakland, Calif. (AP Photo/Eric Risberg)

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Oakland Athletics starting pitcher Sean Manaea stands on the mound after giving up a two-run home run to the San Francisco Giants' Nick Hundley, left, in the first inning of a baseball game Tuesday, Aug. 1, 2017, in Oakland, Calif. (AP Photo/Eric Risberg)

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San Francisco Giants designated hitter Nick Hundley, right, is greeted in the dugout after hitting a two-run home run off Oakland Athletics starting pitcher Sean Manaea in the first inning of a baseball game Tuesday, Aug. 1, 2017, in Oakland, Calif. (AP Photo/Eric Risberg)

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Oakland Athletics pitcher Sean Manaea works against the Cleveland Indians in the first inning of a baseball game, Sunday, July 16, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Oakland Athletics pitcher Sean Manaea works against the Atlanta Braves in the first inning of a baseball game Sunday, July 2, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Oakland Athletics pitcher Sean Manaea works against the Atlanta Braves in the first inning of a baseball game, Sunday, July 2, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Oakland Athletics pitcher Sean Manaea works against the Houston Astros during the first inning of a baseball game Wednesday, June 21, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Oakland Athletics pitcher Sean Manaea works against the Houston Astros during the first inning of a baseball game Wednesday, June 21, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Houston Astros' Evan Gattis swings for a two-run single off Oakland Athletics' Sean Manaea during the sixth inning of a baseball game Wednesday, June 21, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Houston Astros' Norichika Aoki watches his single off Oakland Athletics' Sean Manaea during the third inning of a baseball game Wednesday, June 21, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Oakland Athletics pitcher Sean Manaea works against the New York Yankees in the first inning of a baseball game Friday, June 16, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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New York Yankees' Aaron Judge watches his three-run home run hit off Oakland Athletics' Sean Manaea in the third inning of a baseball game Friday, June 16, 2017, in Oakland, Calif. (AP Photo/Ben Margot)

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Tampa Bay Rays' Evan Longoria, right, hugs Steven Souza Jr. after Longoria hit a home run off Oakland Athletics starting pitcher Sean Manaea during the sixth inning of the second game of a baseball doubleheader Saturday, June 10, 2017, in St. Petersburg, Fla. (AP Photo/Chris O'Meara)