Medeiros was optioned to Double-A Birmingham.
He has logged 137.2 innings at Double-A, but struggled with his control there last season, particularly after getting traded from the Brewers. In all likelihood, Medeiros will be a reliever in the big leagues, but the White Sox will continue to develop him as a starter for now.
Medeiros had his contract purchased from Double-A Birmingham on Tuesday.
The White Sox added Medeiros -- a first-round pick in 2014 -- to their 40-man roster in order to protect the southpaw ahead of the Rule 5 draft. Medeiros was acquired from the Brewers in exchange for Joakim Soria in July and notched a combined 3.60 ERA, 1.37 WHIP and 9.2 K/9 across 137.2 innings with Birmingham and Double-A Biloxi.
Mederios was sent to the White Sox alongside Wilber Perez in exchange for Joakim Soria on Thursday.
Medeiros has spent the entirety of the 2018 campaign with Double-A Biloxi, during which he's logged a 3.14 ERA and 1.31 WHIP with a 9.3 K/9 across 103.1 innings. The 2015 first-round pick has long been praised for his potential, but this season has been the first time he's ever provided on that promise. Look for him to continue at the Double-A level, with a chance at starting the 2019 campaign in Triple-A Charlotte if he keeps up with this recent form.
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|More Pitching Stats|
|Minor League Pitching Stats|
|2015||AFX-Wisconsin Timber Rat||4||5||4.44||25||16||0||0||1||93.1||79||50||46||0||9||40||94|
|2016||AFA-Brevard County Manat||4||12||5.93||23||22||0||0||0||85.0||102||69||56||4||6||63||64|