One of these players is not like the others... One of these players doesn't belong.... I'm assuming Good Claudio shows up In an ideal world where they each match their 2017-2018 bests: Kimbrel, 69.0 IP, 1.43 ERA, 1.42 FIP, 1.50 xFIP, 16.4 K/9, 1.8 BB/9 Hader, 81.1 IP, 2.43 ERA, 2.23 FIP, 2.05 xFIP, 15.8 K/9, 3.3 BB/9, 29 GB% Knebel, 76.0 IP, 1.78 ERA, 2.53 FIP, 2.97 xFIP, 14.9 K/9, 4.7 BB/9, 38 GB% Jeffress, 76.2 IP, 1.29 ERA, 2.78 FIP, 2.86 xFIP, 10.5 K/9, 3.2 BB/9, 56 GB% Claudio, 82.2 IP, 2.50 ERA, 3.21 FIP, 3.30 xFIP, 6.1 K/9, 1.6 BB/9, 67 GB% And you could have at least two other legitimate back-end options with Bobby Wahl and one of Burnes/Peralta ending up in the bullpen.