Mizzou righty Kyle Gibson, ranked #4 on BA's pre-draft top 200 prospect list, has a stress fracture in his forearm, won't throw for six weeks, and is almost certainly going to slide on the draft boards.
Andy Seiler had a blog post up prior to this news breaking, detailing highly regarded college pitchers with heavy workloads, and the first guy he looks at is...Gibson.
That's going to screw up the top of the draft, as Gibson was widely expected to be gone when the Rangers pick.