"We were going to continue to evaluate him," he said. "I mean, he's pitched OK. He hasn't lit it up. I think he's a guy who at some point could have helped us. We'll have to see what the diagnosis is."
Amaro said he sees Zambrano as a starter, although pitching as a reliever hasn't been ruled out.
Todd Zolecki is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.