Goeddel hasn't thrown off a mound due to an issue with a muscle in his side, Adam Rubin of ESPN New York reports.
It's unclear how severe the issue is, but it's apparently bad enough to keep him out in some capacity. Due to this, it's tough to gauge how long Goeddel will be out. As long as he gets back to camp soon, however, the right-hander should have a good chance of making the major league roster after posting a 2.43 ERA in the majors last season.