It wasn’t a long stay on Chicago’s 40-man for Vargas, whom the White Sox claimed off waivers from the Diamondbacks in the second half of November. Vargas joined the White Sox as someone without any major league experience or a high-end prospect pedigree. FanGraphs’ Eric Longenhagen wrote before 2020 that “Vargas is a Triple-A depth arm with a 40 fastball based on velo and a 45 fastball based on how it plays at the top of the zone.”
Vargas, who turned 24 in August, has so far topped out at Double-A ball in the minors. He has done a decent job keeping runs off the board there with 121 1/3 innings of 3.86 ERA ball and 100 strikeouts against 31 walks.