Matt Garza made his second rehab start Monday, appearing for Triple-A Iowa.
Garza made 54 pitches over 3 1/3 innings, throwing 37 strikes and allowing just four singles. He also struck out three batters.
This comes five days after he made his first rehab start with Double-A Tennessee, when he threw 42 pitches in 2 2/3 innings last Wednesday.
Garza, 29, hasn't pitched for the Cubs in nine months. He was shut down with a stress reaction in his right elbow last July, just before the trade deadline. Then, early in spring camp this season, he strained his lat muscle and has been shut down since.
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He'll make at least one more rehab start in the minor leagues and will rejoin the rotation after that.
Whenever Garza returns to the big-league club, the Cubs will have a decision to make in who to send back to the bullpen. Carlos Villanueva (2.85 ERA, 0.93 WHIP) and Scott Feldman (3.34 ERA, 1.28 WHIP) have been great to start the season, though Villanueva has given up four runs each of his last two starts.
Feldman gets the nod Monday night against the Rangers, his former team.