October 13, 2020 | 12:28pm

Already trailing 1-0 to the Braves in the NLCS, the Dodgers were dealt a big blow Tuesday morning.

Clayton Kershaw has been scratched from his scheduled Game 2 start because of back spasms. Right-hander Tony Gonsolin, who hasn’t pitched since Sept. 26, will take Kershaw’s place as the Braves counter with RHP Ian Anderson.

Kershaw, 32, has won both of his starts in the 2020 MLB playoffs. He threw eight shutout innings with 13 strikeouts in a wild-card series clinching win over the Brewers, and he won Game 2 of the NLDS against the Padres after giving up three runs in six innings.

The three-time Cy Young winner had a 2.16 ERA and 62 strikeouts in 10 regular-season starts.