Ranking the 20 most lopsided trades in sports history: Which team pulled off the biggest robbery?

Trades come into play in every professional sport. Some guesswork usually factors into the equation, as does a little bit of luck. But when the odds aren't in your favor? You end up in the history books -- for all the wrong reasons.

On the 40th anniversary of Kareem Abdul-Jabbar being shipped to the Los Angeles Lakers for relative peanuts, we've ranked the top 20 most lopsided swaps in sports history. Did the Milwaukee Bucks' misfortune top our list? Click through above and find out.