Here are the stats for all MLB bullpens. Let's just walk away from fWAR and look at comprehensible things. Lots of good innings could confuse the issue (and increase fWAR). Instead, I am going to look at things that are generally important for relief pitchers, like not walking people, striking them out, getting ground balls, and not giving up home runs.
- The Phillies are walking 3.87 batters per nine innings, which is the second worst in the National League, behind only the Marlins.
- The 41.7% groundball percentage is third-lowest in the NL.
- The Phillies' relievers give up 1.22 home runs per 9 innings, which is the highest in the NL.
- The strikeout rate (K/9) is 9th in the NL at 7.97, which is at least mediocre.
- The strand rate is 72.3%, which is the 4th-worst in the NL. This is correlated to the inability to induce ground balls and strike out batters, so it is a description of an effect, not a cause, but still.
- Trade for bullpen relief.
- Promote someone from the minors.
- Play the cards they have this year and don't make things worse in the future by trying to find a short-term fix.