The White Sox announced Monday that Guerrero will be included as part of the team's 60-man roster pool.
The hard-throwing reliever has posted some solid strikeout rates during stints in the majors the past two years with the Marlins, but poor control and command have hindered his overall effectiveness. Though the expanded roster will allow Guerrero to stick around with the White Sox in 2020, expect most of his use to be limited to lower-leverage spots.