The White Sox announced that right-handed pitcher Declan Cronin has been called up to the big league team from Triple-A Charlotte, bringing the 40-man roster to 38.
Cronin, 25, was a 36th round draft pick by the White Sox in 2019, and has slowly progressed through the club's minor league system since.
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Spending all of this season at Triple-A, Cronin has posted a 4.03 ERA and a 1-0 record across 41 appearances, all in relief.
Cronin has tossed 44.2 innings, yielding 20 walks and three home runs while punching out 36 hitters.
According to the White Sox, Cronin has been particularly effective in July, posting seven scoreless outings with a 2.61 ERA across 10 appearances.
Declan Cronin will wear uniform No. 59 and will be available out of the bullpen as the White Sox look to draw even in a four-game series against the Guardians at Guaranteed Rate Field.