Jackson will pitch in a minor league game Thursday, the Fort Worth Star-Telegram's Jeff Wilson reports.
As he continues his rehab from a back injury in minor league camp, Jackson will be eligible to have a DL stint backdated so he can return to the Rangers' bullpen early in the season if he is cleared medically and there is a need. While he has solid stuff, the Rangers are loaded with quality high-leverage arms, so Jackson doesn't figure to bring much to the table from a fantasy perspective this year.