REASONS FOR CONCERN

There are question marks around the infield. Can Brandon Moss and Josh Donaldson repeat their 2012 success at first and third base? At shortstop, Japanese free agent signee Hiroyuki Nakajima had a poor spring, then injured a hamstring near the end of camp. Jed Lowrie, acquired from Houston, can hit but there are worries about his defense at short. Second base was still up in the air after Jemile Weeks was sent to the minors, with Scott Sizemore and spring sensation Eric Sogard battling for the job. Generally, can the A's rekindle the same clubhouse chemistry without catalysts Jonny Gomes, Brandon Inge, Brandon McCarthy and Cliff Pennington?