- Bruce Levine, Chicago baseball beat reporter
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Grabow, who had been on the DL since late June, will return to Chicago to consult with team doctors in the next few days. He was rehabbing a knee injury in Mesa, Ariz., when this latest setback occurred.
Grabow had a 7.36 ERA in 28 appearances out of the bullpen in 2010.
Bruce Levine covers the Cubs for ESPNChicago.com.