PHILADELPHIA -- Right-hander Carlos Zambrano threw 4 1/3 scoreless innings in a start Tuesday with Class A Clearwater.
He probably needs two to three more starts before the Phillies consider him for a spot on the big league roster. Zambrano signed a Minor League contract this month. He can ask for his release if he is not on the Phillies' roster by July 1.
"I saw him on video," Phillies general manager Ruben Amaro Jr. said. "I talked to [player development director] Joe Jordan and [Minor League roving pitching coach] Carlos Arroyo, guys who have been asked to keep an eye on him. He threw OK. I don't think he lit the world on fire. But he's gaining arm strength. It was a little better than his last outing. He's getting stretched out. We'll see where he goes from here."
Todd Zolecki is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.