LOS ANGELES — No sweat, Clayton Kershaw.

Changing jerseys to beat the 103-degree heat, the Dodgers ace with a checkered playoff history delivered a signature performance, pitching Los Angeles past the Houston Astros 3-1 Tuesday night in the World Series opener.

Boosted by Justin Turner’s tiebreaking, two-run homer in the sixth inning off Dallas Keuchel, Kershaw was in complete control against the highest-scoring team in the majors this season.

“Definitely feels good to say it was the World Series, and it feels good to say we’re 1-0,” Kershaw said.

The left-hander had waited his whole career for this moment. And once he took the mound in his Series debut, he lived up every bit to the legacy of Sandy Koufax, Orel Hershiser and the greatest of Dodgers hurlers.

The three-time Cy Young Award winner struck out 11 , gave up just three hits and walked none over seven innings, featuring a sharp breaking ball that often left Houston batters taking awkward swings. His lone blemish was a home run by Alex Bregman in the fourth that made it 1-all.

No matter, with Koufax in the house, Kershaw did his pal proud.

“He was as good as advertised,” Keuchel said.

A sweltering, pulsating crowd at Dodger Stadium dotted with Hollywood A-listers was filled with Kershaw jerseys, and he drew loud cheers all evening.

Kershaw got one more ovation when he walked through a corridor to a postgame interview. There, fans applauded a final time.

“I felt good. It’s a tough lineup over there,” Kershaw said. “The way Keuchel was throwing it was up and down a lot, which was good. It got us into a rhythm a little bit. I think for me personally, it helped out a lot.”