Kopech did not disclose its personal decision-making process in the announcement. In accordance with the modified rules for the 2020 season, players have the exclusive right to withdraw without penalty. Those who have a particular medical basis for the decision can keep their salary and their service time; others sacrifice these things.
It is not clear in this case whether Kopech will continue to accumulate service time during the 2020 season. Otherwise, the 24-year-old will start the 2021 campaign with just over a full season of MLB service.
Kopech is one of the most exciting young talents in the White Sox organization. It debuted in 2018, showing great things but ultimately with a torn ulnar collateral ligament.