Who's on second? Better question: Who's not on second? The A's started spring training with five players vying for the second base job. Manager Bob Melvin has narrowed the field to six. It started out as (in alphabetical order) Jed Lowrie, Adam Rosales, Scott Sizemore, Eric Sogard and Jemile Weeks. Thursday, discussing second base, Melvin said, "And Andy Parrino has done a nice job." Parrino thumbnail: age 27, switch-hitter, obtained last winter from San Diego in the Tyson Ross trade. Major-league experience: 79 games for the Padres over the past two seasons, hitting .200. Weeks, who lost the job with a shaky sophomore season, is back from a bruised shoulder and went 0-for-2 off the bench Thursday. He hadn't played since March 1. When will the winner be declared? Maybe not until Opening Day, Melvin said. Maybe not even then. It's still wide open. "Certainly Jed Lowrie is a guy that, we're going to have to find a spot for him somewhere," Melvin said. "You look at Adam Rosales' numbers this spring (5-for-11, .522 on-base percentage), Eric Sogard's numbers (8-for-12). I don't think anything's settled as far as that goes." Read more: http://www.sfgate.com/athletics/article/Crowd-vying-for-A-s-second-base-job-4356388.php#ixzz2NcyNCh6x