Safe to say Kershaw will be a HOFer. If my BBRef research is correct, as it stands now, he will have the highest postseason ERA of any HOFer with at least 5 postseason starts..... by a lot. And will have the second most PS starts. Pretty crazy glitch in Kershaw's great career.
As it stands:
ERA. GS
Kershaw. 4.49 32
B.Grimes 4.29 7
Kaat 4.01 5
Morris 3.80 13
Sutton 3.68 14
...and to top it off, on the other side, the HOFer with the best PS ERA is fellow Dodger legend Koufax with 0.95 in 7 GS. Regular season twins but postseason polar opposites.