"I'm very happy with the results we've gotten from him," manager Ned Yost said. "The period we had to send him down to get back on track really worked.
"We wanted to put him in a low-leverage situation to start out and from that point on it's just been 'put him back in the fire.' He's been very good."
Going slow with Soler
The Royals have indicated they are in no rush to bring back outfielder Jorge Soler, who is on a rehab assignment with Omaha. Soler, who is recovering from a left oblique strain, can stay on rehab through May 10.