These three guys are so close: in age (born within eight months of each other), in IP (between 390-430), in overall dominance, in bad timing (in terms of awards and possible HOF consideration one day--they're doing just fine in remuneration). Will one of them break away from the other two and go on to put up career numbers within range of Mariano? Will all three break down within five years? Are their rate stats legitimately unprecedented or more a product of the game today? Whose long-term prospects are the best?
Chapman: 389.2 IP, 189 SV, 188 ERA+, 1.006 WHIP, 1.87 FIP, 3.67 K/BB, 13.7 WAR
Jansen: 431.2 IP, 198 SV, 174 ERA+, 0.880 WHIP, 1.84 FIP, 5.65 K/BB, 12.7 WAR
Kimbrel: 426.2 IP, 272 SV, 216 ERA+, 0.921 WHIP, 1.79 FIP, 4.23 K/BB, 15.8 WAR
Mariano: 416.0 IP, 211 SV, 205 ERA+, 1.000 WHIP, 2.76 FIP, 4.10 K/BB, 18.3 WAR
I pro-rated Mariano for 416 IP, an average of the other three. I didn't include Andrew Miller because his career path is very different. 538 says he's the best reliever in the game right now:
Poll Results
| Option | Votes |
| Craig Kimbrel | 4 |
| Aroldis Chapman | 0 |
| Kenley Jansen | 0 |