The Cubs will have to overcome perennial division power St. Louis and a Cincinnati squad that looks to rebound from an injury - plagued 2014 season .
Perennial division power St. Louis is a Pittsburgh team that gets better and better each year .
The Cubs will have to overcome perennial division power St. Louis , a Pittsburgh team that gets better and better each year , and a Cincinnati squad that looks to rebound from an injury - plagued 2014 season .