The arc of the Chicago Cubs season has been amazing to watch unfold because no other season was quite like it. The Cubs were 10 games under .500 on June 8, then got hot and played 22 games over .500 (50-28) from June 9 to Sept. 6, when they had a 92% chance of making the playoffs. But just when it looked as if they could plan their postseason rotation, they faltered down the stretch, going 6-14 from Sept.