A's best trades under Billy Beane have come in the offseason, not midseason
Speculation about A's GM Billy Beane
121 Billy Bean Baseball Player Stock Photos, High-Res Pictures, and Images - Getty Images
Oakland A's Billy Beane Spring Training 2012 Interview: Part 1 - Athletics Nation
Billy Bean - Wikipedia
Billy Beane Baseball Cards: Buying Guide, Rookie Card Checklist and More
Billy Beane Finds New Moneyball Inefficiency - WSJ
Billy Beane's Athletics are all-in like we've never seen before - Athletics Nation
Was Billy Beane a good player? - Quora
For Billy Beane, Winning Isn't Everything - The New York Times
Billy Beane can't get enough of soccer after revolutionising baseball, Oakland Athletics
Potential or Experience Today's Machining World
Billy Beane autographed baseball card (Minnesota Twins) 1987 Topps #114