He is a connoisseur of fine wine.
Enjoys wearing colorful caps and shirts. His wife and children make, with messages and reminders, the golf balls he uses each week.
During his 2000 victory at Walt Disney World Resort, he drew a picture of Mickey Mouse on one side of the golf ball and on the other side, his wife wrote, "Mouse in the House".
Got his nickname Duffy from his grandparents when he was small. Tagged along on the golf course and they called him "Little Duffer."