The Cubs have sent Matt Garza back to Chicago for tests after he complained of stiffness in his right arm. "He's stiff today," manager Dale Sveum said. "Nothing major, but he's not going to be able to go on Tuesday. He threw two sides ... Just back him off, just send him home to go see the doctor. Just being a little (cautious)." Garza is unlikely to undergo an MRI. "I don't think that's necessary," Sveum said. "He just had one and (it came out) very clean. (The doctor) will just look at him as much as anything." Garza hasn't pitched since July 21 when he left with cramping in his triceps.