DETROIT — Step one of Luke Putkonen’s rehabilitation stint is complete. Now, it’s on to step two.

The right-handed reliever threw one scoreless inning of relief at Class A West Michigan on Wednesday, allowing one hit.

“It felt good,” said Putkonen, who’s been sidelined since April 19 with inflammation in his throwing elbow, something that had been bothering him since spring training. “You wanna get three outs, but I wanted to go through all my pitches, make sure I could throw everything. It went well.”

His rehabilitation assignment will now be transferred to Triple-A Toledo, where he’ll throw again on Friday.

“He said the discomfort he felt in his elbow, he didn’t feel it,” manager Brad Ausmus said. “There’s a tentative plan, but with rehab, you just gotta see how they respond with each appearance, make sure that they bounce back fine. If everything goes well, then we’ll take the next step.”