WAR calculated by Baseball Reference.
| Year | Rank | WAR | oWAR | dWAR | Tm | Pos | |
|---|---|---|---|---|---|---|---|
| 2011 | XXXXX | 0.0 | 0 | 0 | KCA | BAT | |
| 2012 | +155+ | 2.5 | X | X | KCA | PITCH | |
| 2013 | XXXXX | -0.2 | X | X | KCA | PITCH | |
| 2014 | +142+ | 2.8 | X | X | KCA | PITCH | |
| 2015 | XXXXX | 1.2 | X | X | KCA | PITCH | AS |
| 2016 | XXXXX | 2.0 | X | X | KCA | PITCH | AS |
| 2017 | XXXXX | 0.2 | X | X | KCA | PITCH | |
| 2018 | XXXXX | 1.6 | X | X | TOT | PITCH | |
| 2019 | XXXXX | -0.4 | X | X | CHA | PITCH | |
| 2020 | XXXXX | -0.1 | X | X | CHA | PITCH | |
| TOTAL | XXXXX | 9.6 |
The line graph below shows WAA by year and WAR for reference. WAR and WAA scales differ but in most cases they track with each other. Red dotted line is WAA=0 demarcation separating above and below average
Kelvin Herrera Post Season Games
| Rank | WAA | IP | ERA | Gs | Gr | Tm |
|---|---|---|---|---|---|---|
| +118+ | 1.56 | 28.7 | 1.26 | 0 | 22 | KCA |
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