Have not clinched a spot yet, but up 5.5 on 2nd place with 12 to play. The Cards and Brewers have to play 8 more times in the next couple of weeks, so I am going to assume they won't catch up unless one team sweeps, but that would knock out the other one - and the Reds schedule is tough. The biggest challenge for the Cubs is their own schedule - with 8 of the 12 remaining games against 3 teams currently in the playoffs from the AL Central. The Cubs are tied for the 2 seed right now, and if they can win the division, they will get home field against a wild card team or the lowest ranked 2nd place finisher - which at this rate looks like the Cards, Phils, Giants or maybe Marlins. I am pretty confident in a 3 game series for the Cubs against any of those teams knowing Yu and Hendricks will go game 1 & 2 - except maybe the Cards who have a 4 deep rotation. Phillies have two good arms, but only Wheeler is scary as a lefty, the Fish have some young arms, but nothing dominant outside of Sixto.
Should be a good final couple weeks.