The White Sox are expected to add four players to their 40-man roster on Tuesday in order to protect them in next months Rule 5 draft.
Pitchers Andre Rienzo and Santos Rodriguez, outfielder Jared Mitchell and catcher Josh Phegley -- all of whom ended the 2012 season at Triple-A Charlotte -- should be added to the White Sox 40-man roster, which currently has six spots available.
Rienzo, a right-hander who earlier this season was suspended 50 games for use of performance enhancing drugs, struck out 113 batters in 103 13 innings.
He and Rodriguez both pitched in the Arizona Fall League this offseason. Rodriguez, a left-hander struck out 69 batters in 71 13 innings this season, was named to the AFL rising stars team earlier this month.
The 23rd overall pick of the 2009 draft, Mitchell hit .237 with 11 homers and 67 RBIs in 130 games between Double-A Birmingham and Charlotte.
Phegley, whom the team selected 38th overall in the 2009 draft, only hit .266 with 48 RBIs at Charlotte last season but threw out 30 of 65 stolen base attempts.
Players who were 19 or older when they were signed and have been in the minors for four years and players who were 18 or under with at least five years in the minors must be added to the 40-man roster or they become eligible for the Rule 5 draft.
Held on the final day of the winter meetings, the Rule 5 draft allows teams to pluck unprotected minor-leaguers out of other organizations systems for the bargain cost of 50,000.
Players selected in the draft are immediately added to the drafting teams 40-man roster and then must remain on the 25-man major-league roster all season long. Draftees can be waived by their drafting club and if they clear waivers must be offered back to their original club for 25,000.