Mitchell is a good test for Douglas. He was always billed as an OL guy, but most of what he's done has been in free agency or 1st-round picks, which is fine. But I would expect one of his specialties to find some gords and right tackles in the middle rounds that we can develop into starters. Clark got hurt immediately, so that's not on Douglas. Mitchell is his next swing at that.
In the meantime, keep Zach upright.