Keppinger was scratched from Monday's contest against the Reds with slight inflammation in his right shoulder, while Crain has pitched only on Feb. 25 against the Giants because of a strained right adductor. Crain threw a bullpen Wednesday but was not ready to pitch in a Minor League game, while Ventura indicated Keppinger could return soon, though possibly not right away at third base.
"He's looking very good," Ventura said of Keppinger. "We actually might start him at second. I think throwing would be easier on him, just to get him in there and move him around. But he's still a couple days away.
"We're being cautious with him, and we'd rather be cautious with them than put them in there and set them back again. But right now, nothing to jeopardize the start of the season."
Scott Merkin is a reporter for MLB.com. Read his blog, Merk's Works, and follow him on Twitter @scottmerkin This story was not subject to the approval of Major League Baseball or its clubs.