I woke up convinced the San Francisco Giants had won the National League wild-card playoff game the previous night. This decade, that’s what the Giants do in the postseason. Any game they need to win, they win. Including this one, a 3-0 victory in New York over the Mets, thanks to a three-run home run in the ninth inning by utility infielder Conor Gillaspie and a four-hit shutout by Madison Bumgarner.

The Giants’ ability to win when it really matters has meant three World Series championships — 2010, 2012, 2014 — in five years for a franchise that previously had not won a World Series since 1954, when Willie Mays was a pup.

Now the Giants go to Chicago to take on the best-in-ball Cubs, winners of 103 games in the regular season, a club intent on ending a World Series drought that goes back to 1908.

Yes, 1908.

But if I were a Cubs fan … I would be nervous about getting the Giants, of all teams, right here and right now. The Giants who have won nine consecutive win-or-go-home postseason games. The Giants who have been the National League’s team of the 21st century.

The Giants who have won the past three World Series played in “even” years.

Something about this franchise just works. Dodgers fans could tell you about it, after watching the Giants blow past them as “best franchise in the National League”.

Whatever it takes, the Giants get. And when things are particularly challenging, they seem to have Bumgarner around to shut down the other guys. (See: Game 7, 2014 World Series.)

He is unlikely to throw before Game 3 of the best-of-five divisional series, but the Giants have another ace-quality pitcher in Johnny Cueto, who goes in Game 1.

Granted, the Cubs were miles better than the Giants during the regular season — 103-58 record to the Giants’ 87-75; 808 runs to 715; 511 runs allowed to 631 … and on down the line.

But it perhaps is instructive to recall that the Giants had the best record in baseball at the All-Star break, at 57-33 (the Cubs were 53-35) before a lousy second half (26-42, with four games left) nearly cost them a playoffs berth. But in even-numbered-years clutch fashion, the Giants won their last four to slip past the Cardinals for the final playoffs berth.

And here they are, ready to face the Cubs in the Friendly Confines of Wrigley Field.

Hey, no pressure Cubbies. It’s been only 108 years since a championship, not to mention 71 years since appearing in the World Series at all. “Expectations” is just a word.

This is their year … everybody says so.

The Cubs have Theo Epstein, sabermetric genius as club president, egghead manager Joe Maddon making the in-game decisions, three excellent starting pitchers and the lineup that scored 808 runs.

It’s their turn, don’t you see?

Fans already are looking ahead to a World Series showdown with the Boston Red Sox, Theo Epstein’s previous project. He put together the Boston team that broke the 86-year Curse of the Bambino and won the 2004 World Series, and a second on his watch in 2007.

But the Giants of MadBum, Posey and Bochy stand in their way, and those guys cast a long shadow.