Most team's just don't have that type of depth to replace the production of their 3 best players, let alone a league MVP. If they go down for an extended period of time (like a 60day DL) it's safe to say our season is probably in jeopardy just like most teams who suffer long term injuries to their best players. Some have fallback plans with MLB ready prospects (which in most cases are not guaranteed to be any more productive than replacement level bench players upon call up) but really, losing a Josh Donaldson or Russell Martin and you're probably not expected to make the postseason.