Ross may throw 'pen session Sunday

Padres righty on DL since Opening Day start with shoulder inflammation

Ross may throw 'pen session Sunday

SAN DIEGO -- Right-hander Tyson Ross could throw his first bullpen session as soon as Sunday, according to Padres manager Andy Green.

Ross threw from 135 feet on flat ground before Monday's 13-4 loss to the Marlins, and continues to progress after hitting the disabled list with right shoulder inflammation following his Opening Day start.

"[Ross] threw all fastballs," Green said. "The ball's coming out good and he's still got a smile on his face and knows he's progressing. I think right now it's just a matter of time before he gets on a mound for a bullpen session."

Ross has been throwing back-to-back days and then taking a day off, while slowly extending his throwing distance. Green said that the plan has always been for the righty to stretch out to 150 feet before throwing a bullpen session, and that distance could come in the next few days.

"My guess is if he throws [Tuesday] he'll probably be scheduled to be off [Wednesday] and then he'll be 150 for probably two days," Green said. "Then an off day and a bullpen would be my guess.

"I don't think he's very far off at all."

Ross briefly talked to Padres first-round pick Cal Quantrill, who threw a bullpen session aftering agreeing to a contract with San Diego on Monday.

"I quickly got to talk to Tyson Ross out there. He went to Cal-Berkeley, so we had something to talk about anyways," the former Stanford University pitcher said with a laugh.

"[He] just wished me luck and said, 'We'll see you soon, hopefully.'"

Carlos Collazo is a reporter for MLB.com based in San Diego. Follow him on Twitter @CarlosACollazo. This story was not subject to the approval of Major League Baseball or its clubs.