It's no secret that the Cubs' bullpen has been leaned on heavily this season. They've also been really good, posting a 3.27 ERA as a unit (fourth-best in Major League Baseball). But no contender averages as many innings per game from their bullpen as the Cubs.
Steve Cishek is on pace to eclipse his career-high in appearances and innings pitched, while Pedro Strop and Justin Wilson will likely be close to their career-highs in the same categories. Injuries to Carl Edwards Jr. and Brandon Morrow, who is currently on the disabled list with a bicep strain, have made the stress on the 'pen even greater.