The words “shock the world” came up Tuesday among the Astros, hours before first pitch. The first two innings of the 2014 season fit the bill.

A 6-2 win over the Yankees on opening day at Minute Maid Park was baseball’s version of role reversal. Sloppy fielding early made the Yankees look like the team that won 51 games last season.

“They came out swinging, so you have to give them credit,” retiring Yankees shortstop Derek Jeter said on his final opening day. “It didn’t seem like they were nervous or anything or they had any butterflies.”

Astros newcomers such as Scott Feldman and Dexter Fowler made a huge difference. The Astros didn’t just eke out the win — they thoroughly outplayed the Yankees, who have a payroll roughly four times larger. Technically, the Astros snapped a 15-game losing streak, dating to last season.

Feldman went 62⁄3 innings and surrendered just two hits, while Yankees starter CC Sabathia allowed six runs in six innings.

“It’s exciting,” said Fowler, who doubled to Tal’s Hill in the Astros’ first at-bat of the season. “Especially the people that showed up. They came out, and it was loud. I hope it’s like that the whole year.”

The Astros were aggressive all night at the plate and on the bases, and they made great plays defensively throughout.

“That’s a tremendous job by that group in there,” manager Bo Porter said. “They were focused.”

The Yanks scored twice in the eighth inning, but offseason bullpen addition Chad Qualls escaped further trouble with a 5-4-3 double play from Alfonso Soriano.

Righty Matt Albers, who like Qualls is back for a second tour of duty in Houston, got the final three outs. A Houston native, Albers said he was hoping for the chance to pitch in the opener.

Defensive plays, including a running basket catch from Jose Altuve — and even a quick reaction from pitcher Kevin Chapman on a 30-foot dribbler with the bases loaded in the seventh — were just as important as the six runs the Astros scored over the first two innings.

“I thought our staff did a tremendous job of positioning,” Porter said. “I felt like we were in the right place all night.”

The top of the Astros lineup was reimagined this past winter, and Fowler and Altuve had two hits apiece through the first two frames.