History shows that trading Cliff Lee is a terrible idea
Trade Retrospective: Mariners move Cliff Lee to Rangers for prospect haul - Beyond the Box Score
The History Of The Cubs Draft: 1965-2011 - Bleed Cubbie Blue
What's wrong with the Manitou Cliff Dwellings Museum and Preserve? (What's Wrong with the Manitou Cliff Dwellings Museum and Preserve?) — High Country News – Know the West
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Yankees: Revisiting the Cliff Lee Non-Trade That Sank the 2010 Season
Top 5 worst trades in Phillies team history — chops316 on Scorum
The 12 biggest gifts in sports history; the most generous trades of all time – New York Daily News
Don't let the fact that we traded for Roy Halladay 12 years ago today distract from the fact we traded Cliff Lee away an hour later 12 years ago today. : r/phillies
J.D. Martinez Finds New Life as a Tigers Hitter - The New York Times
Phillies Hot Stove History: The 2009 trade and 2010 free agent signing of Cliff Lee Phillies Nation - Your source for Philadelphia Phillies news, opinion, history, rumors, events, and other fun stuff.
Historical Comparisons for Hypothetical Lee Trade Phillies Nation - Your source for Philadelphia Phillies news, opinion, history, rumors, events, and other fun stuff.