A's best trades under Billy Beane have come in the offseason, not midseason

A's need to make Tommy La Stella a priority this offseason

What are some of the reasons why Billy Beane is considered a good but not great general manager (GM)? - Quora

Billy Beane - San Francisco Chronicle

Trade deadline big list: Each team's most untouchable player - ESPN - SweetSpot- ESPN

Heavy Hitter, People

January, 2015

10 biggest trades in Oakland A's history

Five MLB players who could be traded before the end of June

MLB trade deadline: 10 bold predictions, including Noah Syndergaard to California and a quiet July 31 for the Red Sox

Billy Beane Finds New Moneyball Inefficiency - WSJ

Inside the A's first-half dominance and how they plan to make it last all season - ESPN