Callaspo may debut at first base vs. Arizona

SCOTTSDALE, Ariz. -- Friday has the makings of a big day in A's camp. Not only is lefty Scott Kazmir slated to finally make his first spring start, but Alberto Callaspo is penciled in to make his debut at first base.

Callaspo has played five different positions in the Majors, but never first base -- not even in a Spring Training game. The A's believe he has what it takes to form a nice little platoon with Brandon Moss, though.

"As far as the skill-set goes," manager Bob Melvin said this week, "there's no reason he shouldn't be able to be a very good first baseman."

Melvin said Callaspo had "a little back issue" Thursday, which could postpone his first base debut. Melvin said he would wait until Friday morning to decide if the problem was serious enough to warrant scratching Callaspo from the lineup.

"That would be the only thing that would affect him," he said.