if Liriano came up w/ Thorasic Outlet Syndrome, yep I'd call him worn down. Age and innings are two components, and illustrated very well by your posts here that there's correlation, not necessarily causation, and that there's more to the miles argument. One component is injury rate, type of injury, recovery period and reparation. TOS and taking out part of a rib to improve circulation seems like a "you're getting old, let's see what we can do to extend your career". Maybe some day it'll become a more clear cut "fix" like Tommy John Surgery. When Tommy John had his procedure done it wasn't exactly a perfect success, it took a few tries. Best case scenario for Hughes, is he extends his career a bit. His circulatory issue isn't really "fixed" it's mitigated. As to the CC comp...CC started much higher, there's more room for struggle and still be better than alternatives.