In a New York minute on Saturday, Michael Conforto became a playoff legend.

Conforto, 22, became the third-youngest player in World Series history to record a multi-homer game after connecting for his second solo shot of Game 4 off Kansas City Royals left-hander Danny Duffy in the fifth inning.

The 390-foot blast was the rookie slugger's first career homer off a lefty pitcher - and the first Duffy allowed to a lefty hitter in over four years - and gave the Mets a 3-1 lead. He's the youngest player to hit at least two home runs in a World Series game since Andruw Jones in 1996, and joins Gary Carter (1986) as the only players in franchise history to accomplish the feat.

Conforto, who came into his third-inning at-bat hitting .091 in the playoffs, lifted a majestic solo homer into the second deck in right at Citi Field to become the youngest Mets player to hit a home run in the Fall Classic.

"He's going to be a very, very good player," manager Terry Collins said following the 5-3 loss. "He's had a rough postseason, he hasn't had a lot of hits. But I've said before, he's had good at-bats. He's dangerous, and tonight he showed that."

(Videos courtesy: MLB.com)

Conforto's other home run of the postseason came in Game 2 of the NLDS off Los Angeles Dodgers righty Zack Greinke. He posted an .841 OPS in 56 games during the regular season.