Ian Happ was somewhat confident that he’d be able to return to the Cubs’ starting lineup in a few days after his collision with Nico Hoerner in the outfield in Cincinnati.

Friday, it was confirmed it would take Happ a few days longer to make that return. The Cubs placed Happ on the 10-day injured list with a rib contusion, retroactive to May 4. He’ll be eligible to return to the Cubs’ for their series against Detroit next weekend.

The Cubs selected the contract of Nick Martini, recalled Jason Adam from Triple-A Iowa and designated lefty Kyle Ryan for assignment.

“Just not progressing as quick as we wanted it to,” Happ said. “It was getting better. I thought it would start to clear out quicker and went out for BP today, ran around tried to push it a little bit and just knew that it wasn’t gonna be able to do enough to help the team and we need options off the bench, need more outfielders.”

Happ has been taking batting practice and taking cage work the last few days, but has experienced the most pain doing other baseball related activities.

“It’s more running and throwing than anything,” Happ said. “You don’t realize how much you use your core, your rib cage until you can’t. The impact of running and being able to move around in the outfield is probably the biggest single thing.”

Happ remembers the impact of running into Hoerner last Sunday and having the wind knocked out of him. He had some slight dizziness, but his concussion tests all came back negative and his pain was stemming from his ribs.

“Once the adrenaline wore off it was more, in the moment you knew something clocked you pretty good in the chest and the rib cage,” Happ said. “But it was kinda that next day waking up, moving around I actually started to feel it. The unfortunate part was the bruising in that area is just not something that heals quickly and it’s pretty essential to the total body movements and the last thing we want is to force it back to not be at 100% for the team and to compensate in other areas and have something else flair up.”