General manager Billy Beane set aside his "Moneyball" tactics before last season's trade deadline and reshaped the rotation in a futile attempt to bring the Oakland Athletics a championship. Now Beane is back to selling off potential rentals rather than acquiring them as Oakland sits in the AL West basement. One day after dealing free-agent-to-be Scott Kazmir, the A's send Jesse Chavez to the mound in Friday night's opener of a three-game series with the San Francisco Giants across the bay.