Then signed a minor-league contract with the White Sox on Jan. 24.
Then elected free agency earlier in the offseason and will now head to Triple-A Charlotte as organizational depth for the Sox. The 23-year-old righty appeared in nine games for the Mariners last season, surrendering six earned runs in 11 frames while striking out five batters and walking two. The White Sox don't have a particularly deep bullpen, so Then could get some more looks in the majors for his new club.