Bleeding Yankee Blue: WHY THE YANKEES MISS EL DUQUE
David Cone – Society for American Baseball Research
Judge slugs 3rd walk-off homer, Yankees beat Royals 1-0 - The San Diego Union-Tribune
Duke Maas – Society for American Baseball Research
1998 Yankees, June 3: “El Duque” shines in MLB debut - Pinstripe Alley
El Duque records his ninth K of the game vs. Red Sox
The best rookie seasons in Yankees history
This Day in Braves History: May 20 - Battery Power
El Duque shines in postseason debut in '98 ALCS