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White Sox end the Kelvin Herrera experiment with Nick Madrigal promotion

Somewhat lost in fans’ celebration over the White Sox bringing Nick Madrigal up for a Friday-night major league debut was the corresponding move.

The Kelvin Herrera experiment is over.

The White Sox designated the veteran reliever for assignment to make room for Madrigal on Friday, bringing to an end a tough stint on the South Side.

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Herrera joined the White Sox on a free-agent deal before the 2019 season, a two-year, $18 million pact with a club option for 2021, the hope being that he could rediscover the magic that made him a member of an elite Kansas City Royals bullpen during the years that team won back-to-back American League pennants.