Both are doing daily rehabilitation work in the mornings at Kauffman Stadium.
"I had a choice to rehab here or in Arizona, and they let me come here and be a part of it with the guys," Duffy said. "It's good to be around everybody again."
Duffy says he plans to start throwing in November and Paulino won't be far behind.
"I plan right now for Dec. 1," Paulino said. "I'm about two weeks behind Duffy. We're trying to be back in May and June. We want to help, we want to be part of this team."