Left-hander Matt Moore skipped his scheduled batting practice session Monday with mild lower abdominal soreness, but neither he nor manager Joe Maddon consider it a serious problem or setback for the Rays' top pitching prospect.

Moore, who is also ranked as MLB.com's No. 1 prospect, began feeling soreness in the middle of his stomach, right below the belly button, Friday during his bullpen session. He went on to play catch from 60 feet Saturday and from 75 feet Sunday. Moore has never had a similar injury and hasn't seen a doctor or undergone an MRI, saying it was only mild and was feeling better.

"I don't feel like it's a major setback, just because I still threw the next couple days. If it was something major, I would have shut it down and been like, 'Hey, this is it for right now,'" Moore said. "I lifted lower body [Saturday], and I ran and did my stuff like I was supposed to, played catch and felt good. We're going to just take it day by day and see how much better it can get."