LOS ANGELES — L.A. loves Roki.

With a stint in relief for the ages, a new Dodgers hero emerged Thursday.

With a perfect eighth, ninth and 10th inning in Thursday’s 2-1 National League Division Series-clinching Game 4 victory over the Philadelphia Phillies, the kid came through for his new city in its time of need.

With “one of the great all-time appearances out of the ’pen,” as Manager Dave Roberts billed it, the Dodgers have confirmation that they’ve hit on someone special – and good luck to the Chicago Cubs or Milwaukee Brewers to hitting him when the NL Championship Series begins Monday.

Roki Sasaki plugged the hole in the heart of the Dodgers’ World Series defense by shoring up a bullpen in poor shape.

The concept of leaning hard on most of the regular relievers has been a non-s

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