The Chicago White Sox have purchased the contracts of right-handed pitcher Dylan Cease and left-hander Kodi Medeiros from Class AA Birmingham and right-hander Jordan Stephens and catcher Seby Zavala from Class AAA Charlotte.

Cease, 22, was named MLB Pipeline's Minor League Pitcher of the Year in 2018 after going 12-2 with a 2.40 ERA (33 ER/124.0 IP) and 160 strikeouts over 23 combined starts between Class A Winston-Salem and Birmingham. He went 3-0 with a 0.94 ERA (5 ER/47.2 IP) and 71 strikeouts over his final nine starts of the season with the Barons.

Cease, the No. 25 Prospect in baseball and No. 3 in the White Sox organization per MLB Pipeline, was named to the Carolina League All-Star Team with Winston-Salem and to the All-Star Futures Game with Birmingham. He was acquired by the Sox from the Cubs with infielder Bryant Flete, outfielder Eloy Jiménez and first baseman Matt Rose on July 13, 2017 in exchange for left-hander José Quintana.

Medeiros, 22, went 7-7 with a 3.60 ERA (55 ER/137.2 IP) and 141 strikeouts over 27 games (22 starts) in 2018 between Class AA Biloxi in the Milwaukee organization and Birmingham. He was acquired from the Brewers with right-hander Wilber Pérez on July 26 in exchange for right-hander Joakim Soria. Medeiros is rated by MLB Pipeline as the No. 19 Prospect in the Sox organization.

Stephens, 26, combined to go 8-10 with a 4.23 ERA (69 ER/146.2 IP) and 139 strikeouts over 28 combined starts between Birmingham and Charlotte last season. He originally was selected by the White Sox in the 15th round of the 2015 First-Year Player draft out of Rice University.

Zavala, 25, batted .258 (98-380) with 22 doubles, 13 home runs, 51 RBI and 50 runs scored over 104 games between Birmingham and Charlotte in 2018. He combined to throw out 32.7 percent (18-55) of attempted baserunners and was named to the Southern League midseason All-Star Team with the Barons. Zavala was selected by the Sox in the 12th round of the 2015 draft out of San Diego State.

Following the moves, the White Sox 40-man roster increases to 38.