Chicago Cubs sign Ben Zobrist, trade Starlin Castro to Yankees - DRaysBay
Starlin Castro has offered essentially no improvement for Yankees second basemen - Pinstripe Alley
Ex-Cubs Aroldis Chapman, Starlin Castro await Wrigley welcome as Yankees head to Chicago – New York Daily News
New York Yankees acquire Starlin Castro from Chicago Cubs - ESPN
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Yankees acquire Starlin Castro from Cubs for Adam Warren
Cubs sign Ben Zobrist, send Starlin Castro to Yanks - Sports Illustrated
Adam Warren (baseball) - Wikipedia
New York Yankees acquire Starlin Castro from Chicago Cubs - ESPN
Starlin Castro, a Star Without Patience, Can't Wait for Wrigley Return - The New York Times
Yankees trade Aroldis Chapman to Cubs
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