"I felt really good," Duffy said. "I'm anxious to get back and help this team down the stretch. I've never been more ready to get back on the field and get ready to go. It's not ever going to go away until I take care of it. I've just got to push through until the end of the season."
Duffy said he signed the contract because of the way the Kansas City community had embraced him during his up-and-down career, which included a brief period away from the game and a season lost to Tommy John surgery.