I generally agree with the career arc theory saying that guys that got good late will get bad early, but in Candelario's case, IIRC correctly there were some recurring issues with his wrist that may have been impacting his performance. He actually looked like a pretty promising hitter in his age 23 year and then kind of regressed. Was that injury or not? I'm not arguing it either way, the team has the records to better make that determination but I would put it out there as a factor to add to the decision matrix. Some guys hit their stride late for unique reasons other than the career arc paradigm - JD for instance.