Even great bullpens need a guy at the back of the bullpen to eat innings even if he's hemorrhaging runs. Here's a list of the most valuable bullpens since 2000, and mediocre RP who served a mop-role in >30 IP: (1) Minnesota Twins 2006 (498.0 IP, 3.26 FIP, 9.0 fWAR) featuring: Willie Eyre, 59.1 IP, 5.31 ERA, 5.44 FIP, -0.3 fWAR (2) Cleveland Indians 2001 (569.0 IP, 3.51 FIP, 8.7 fWAR) featuring: Justine Speir, 20.2 IP, 6.97 ERA, 6.34 FIP, -0.3 fWAR featuring: Roy Smith, 16.1 IP, 6.06 ERA, 6.11 FIP, -0.2 fWAR (3) Texas Rangers 2004 (538.2 IP, 3.93 FIP, 8.5 fWAR) featuring: Jeff Nelson, 23.2 IP, 5.32 ERA, 5.25 FIP, 0.0 fWAR featuring: John Wasdin, 12.1 IP, 7.30 ERA, 6.45 FIP, -0.2 fWAR (4) Los Angeles Angels 2004 (490.1 IP, 3.38 FIP, 8.3 fWAR) (K-Rod Powered!) featuring: Ben Weber, 22.1 IP, 8.06 ERA, 6.41 FIP, -0.5 fWAR featuring: Aaron Sale, 10.1 IP, 5.23 ERA, 5.66 FIP, -0.1 fWAR (5) Oakland Athletics 2009 (559.1 IP, 3.35 FIP, 8.3 fWAR) featuring: Santiago Casilla, 48.1 IP, 5.96 ERA, 5.00 FIP, -0.2 fWAR featuring: Dan Giese, 16.1 IP, 5.51 ERA, 6.95 FIP, -0.4 fWAR