From 2013-2015, the Pittsburgh Pirates won at least 88 games with a high water mark of 98 wins in 2015. Last season they took a step back, finishing with a 78-83 record. Andrew McCutchen, the Pirates perennial MVP candidate, was a below average player (0.7 WAR). Even so, the Pirates offense finished a respectable 6th in the National League in runs scored and had seven players with an above-average runs created score (minimum 300 plate appearances).
The starting pitching, however, was no bueno. The Pirates gave a combined 39 starts to Fransisco Liriano and Jonathan Niese, and they rewarded their employer by producing -0.