I was going to say that Kopech has just been terrible to start the year, and that probably means he's due. He can right his ship against someone else this time around, or, better yet, go back to fake reality TV.
It should definitely be Ober, but Varland has basically had one inning where he was ambushed at AAA. 17 Ks and only 2 walks in 9+ innings. I wouldn't hesitate to call him if Ober wasn't available.