There’s some good news and some not-so good news when it comes to Los Angeles Dodgers reliever Blake Treinen and the current arm injury he’s nursing.

Let’s start with the positive first. Treinen recently had an MRI to determine the severity of a forearm injury that had been bothering him. The result indicated no structural damage, leading to the diagnosis of a low-grade sprain.

Some estimates generally speaking have pitchers returning from such an injury after potentially six weeks. As for the not-so good, there’s some ambiguity surrounding Treinen’s injury. The team does not know when he’ll be back, and as such won’t put any timetable on a potential return to the diamond.

Treinen, turning 37 in June, is clearly someone the team wants to have healthy down the stretch for the postseason run. Even if an estimate time-wise is given, this team likely will operate with extra caution in bringing him back early.

Treinen was not used during the three-game sweep at home versus the Rockies. He did warm up Friday to presumably enter the first game of a three-game set with the Rangers. However, the tightness was to the point where Treinen didn’t feel comfortable entering the contest.

Reportedly, the issue first started back at home versus the Cubs on April 13. He gave up a home run to Pete Crow-Armstrong during that outing (though also struck out the side for good measure).

Manager Dave Roberts said he “appreciated [Treinen] letting us know his discomfort.” He also had the following to say prior to the MRI diagnosis:

“Not too concerned, given that he was still trying to pitch yesterday. But I think I just reserve judgment until we get more from the scan. But the level of concern is not too high right now.”