Zack Greinke injury: Dodgers RHP scratched from Saturday bullpen session

GLENDALE -- After playing catch on Friday, Dodgers pitcher Zack Greinke was ruled out of a planned Saturday bullpen session, still feeling the effects of a right calf strain, manager Don Mattingly said.

Greinke continued to feel discomfort in his right calf when testing it. There is no timetable for his next bullpen session, but he will play catch again on Saturday.

"We just have to watch him. We talked about being smart. We don't have a date yet with the calf, I know he's feeling something in there," Mattingly said. "If he wasn't feeling anything, it would be one thing. There's enough of a feeling in there. Guys know."

The injury likely rules out Greinke for his next scheduled start on Tuesday vs. the Mariners at Camelback Ranch. It makes it difficult for Greinke to get three more starts in during Cactus League play (he could conceivably pitch on March 6, March 11 and March 16, for instance), and this puts his status for Australia on March 22-23 further in doubt.

Though Mattingly wouldn't immediately rule anything out.

"Obviously it puts being built up to 90 pitches in jeopardy, but I don't think it necessarily rules him out of Australia at this point," he said.