Tyler Thornburg Likely To Open Season On DL

3:33pm: Thornburg has a shoulder impingement, according to Pete Abraham of the Boston Globe. Thornburg won’t throw for another 10 days, and Abraham notes that this injury could sideline him for a month (Twitter link).

9:59am: Red Sox righty Tyler Thornburg is likely to open the season on the disabled list after an “upper right trapezius spasm” prevented him from taking the mound yesterday, as Ian Browne of MLB.com was among those to report on Twitter.

It’s not clear that the trap issue is a significant one; far from it, in fact. But he will go for an MRI, per Jason Mastrodonato of the Boston Herald (via Twitter). Even if it turns out to be a blip, though, a DL stint seems the likely result. Thornburg has been slowed throughout camp as his shoulder strength has failed to catch up to speed.

With the anticipated absence from Thornburg, and without a clear indication to when he might be able to return, the back of the Boston relief corps seems noticeably less potent than had been expected. Still, president of baseball operations Dave Dombrowski says he believes there’s sufficient depth on hand, as Mastrodonato reports.

“Well, I think we’re fine,” Dombrowski said. “Some guys have to step up is what it comes down to. You go through these type of things in any particular year. I’ve done it every year in my career.”

With uncertainty also best describing the current status of key lefty David Price, though, Boston’s pitching depth chart will be tested early. The club did announce that it sent veteran righty Kyle Kendrick to minor-league camp this morning, which suggests Drew Pomeranz will be ready to join the rotation. But it still seems possible the organization will look to make a depth move of some kind with roster churn happening around the league.