ST. PETERSBURG -- Royals manager Ned Yost said he was about 95 percent sure that left-hander Danny Duffy would come off the disabled list and start on Thursday.
"I'm not going to put it in cement yet," Yost said. "We've still got a couple of days to go, but it looks that way."
Duffy, who has been battling left shoulder impingement, had a bullpen session on Monday in which he threw around 30 pitches.
"It went well," Duffy said. "[My shoulder] loosened up as it went.