Jake Arrieta

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Chicago Cubs' Anthony Rizzo toss the ball to Jake Arrieta during the third inning of a spring training baseball game against the San Francisco Giants, Tuesday, March 28, 2017, in Mesa, Ariz. (AP Photo/Darron Cummings)

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Chicago Cubs' Jake Arrieta throws during the first inning of a spring training baseball game against the San Francisco Giants, Tuesday, March 28, 2017, in Mesa, Ariz. (AP Photo/Darron Cummings)

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Chicago Cubs' Jake Arrieta warms up in the first inning of a spring training baseball game against the Arizona Diamondbacks Thursday, March 23, 2017, in Scottsdale, Ariz. (AP Photo/Ross D. Franklin)

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Chicago Cubs' Jake Arrieta throws a pitch against the Arizona Diamondbacks during the first inning of a spring training baseball game Thursday, March 23, 2017, in Scottsdale, Ariz. (AP Photo/Ross D. Franklin)

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Arizona Diamondbacks' Zack Greinke, right, watches the flight of a home run hit by Chicago Cubs' Jake Arrieta, left, during the third inning of a spring training baseball game Thursday, March 23, 2017, in Scottsdale, Ariz. (AP Photo/Ross D. Franklin)

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FILE - In this Oct. 26, 2016, file photo, Chicago Cubs starting pitcher Jake Arrieta throws during the first inning of Game 2 of the Major League Baseball World Series against the Cleveland Indians, in Cleveland. Arrieta is hopeful of receiving a contract extension with the Cubs before he becomes eligible for free agency after the 2017 season, yet he also realizes this could be his final year with the club if talks don't materialize. (AP Photo/Gene J. Puskar, File)

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FILE - In this Oct. 26, 2016, file photo, Chicago Cubs starting pitcher Jake Arrieta throws during the first inning of Game 2 of the Major League Baseball World Series against the Cleveland Indians, in Cleveland. Washington outfielder Bryce Harper, Cubs pitcher Jake Arrieta, New York Mets pitchers Matt Harvey and Jacob deGrom, and Baltimore third baseman Manny Machado were among 146 players eligible to exchange salary arbitration figures with their teams, though most were expected to reach agreements.(AP Photo/Gene J. Puskar, File)