Is this weekend's 4 game set with the Cards the most important series of the year? I think that it is the make or break series for the Cubs. If they win all four, they will be the prohibitive favorite. If they lose all four, they will collapse in a series of finger pointing. And I think if they win less than three, they will give up. I hope its a sweep or I am wrong, but I think that this is THE series that will tell the tale of the season.