I don't care if Arrieta is injured, ineffective, or both - it's time for him to stop starting games for the Orioles. He's not even a 5th starter right now - he's not a major leaguer in general. You can talk all you want about how good he is when he's on. You can tell me he has the best raw stuff of anyone on the staff. I don't give a damn. Right now he absolutely sucks, he has been costing the Orioles games for over a month, and he needs to not be on the 25 man roster. Send him down, send him out, or do whatever it takes to get him off the team, because every time he steps on the mound, it's basically a guaranteed loss.
THIS is exactly the reason why the Orioles need to take a pitcher on Monday. Some, if not most, of the young staff is going to fizzle. We've already seen it with Hunter, we're seeing it now with Arrieta, Matusz could regress at any moment, and we have no idea what we're getting with Britton. If they get one good starter out of those 3 they'll be lucky, and you can't stop stocking pitching depth, especially when you have college power arms with great command that can contribute within a year or two of being drafted. They now have at least 2 spots in the rotation that need replacing, and more could present themselves as the season wears on.