Oakland leaders are making a last-ditch effort to prevent the Athletics from leaving the East Bay. The leaders apparently fear that the NBA's Warriors and NFL's Raiders could follow the A's out of the area without suitable venues. Oakland Mayor Jean Quan said Friday a letter is being sent to Major League Baseball commissioner Bud Selig to let him know the city wants to keep the A's. Selig appointed a committee in March 2009 to evaluate the issue facing the Bay Area's two baseball teams, yet he has provided no timetable for when he might announce a decision. Athletics owner Lew Wolff, determined to move his club south to San Jose so it can survive, and general manager Billy Beane have said they expect to hear something from Major League Baseball by next month.