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 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)
