The results of the exam will be studied by team physician Wiemi Douoguih before a decision is made, but manager Davey Johnson indicated that Zimmerman likely will miss more time.
"I thought it was going to be a definitive thing, but they did the test, and now they're taking a disk of the test and sending it to Wiemi," Johnson said. "He'll examine it [Wednesday morning] closely. At this point, all I know is it's not real favorable. It looks like he's going to need some more rest. We'll just have to wait and see."
Zimmerman has not played since Friday, and he said the pain is only present when he swings a bat.
"It felt perfectly fine throwing," Zimmerman said. "There's nothing wrong structurally with the shoulder. I can throw and it felt fine, it's just a little sore when swinging. It's like a jammed finger or sprained ankle, I guess is the best way to explain it, except it's in my shoulder."