Dating back to their move to Oakland in 1968 from Kansas City, the Athletics have made a number of trades intending to both contend for the playoffs as well as rebuild their farm system towards future contention.
Many of these trades have worked out well for the A's. Billy Beane, in particular, has been placed on a pedestal and heralded as one of the league's best general managers for his ability to identify talent and fleece other gm's of their top prospects and stars.
Beane's mentor, Sandy Alderson, also made a number of moves that helped the Athletics build their system into a contender.
Throughout the years there have been a number of moves that stand out as bad decisions. Whether it be because of injuries to the players acquired, or that the players who were shipped out of Oakland had sudden breakout seasons, the A's have seen some of their top talent perform well elsewhere while the players acquired were not nearly as productive.
The A's are in a position this season where they may need to make a trade before the deadline to bolster their offense and provide their pitching with the support necessary to make a deep run at the postseason for the first time since 2006. We all hope that if they do pull the trigger on a trade, it will be considered a successful trade and not wind up on a "worst-of" list down the road.
Here's a look at the worst trades in Oakland history, in my opinion. Please feel free to mention any trades you think I overlooked in the comments.