Racing PositionsA's sold on Marcus Semien at shortstop12YChristina KahrlA's payoff from Jeff Samardzija deal shows promise12YChristina KahrlOn the market: Sandoval among free agents12YA's Sizemore to have surgery on torn ACL14YSzymborski: Players with top-100 potential14YDan SzymborskiFew easy answers to A's infield questions14YChristina KahrlLowrie's role in Oakland14YDoug MittlerA's Colon 'happy' for new season, mum on ban14YOffseason report card: A's14YDavid SchoenfieldA's acquire Lowrie from Astros in 5-player deal14Y