CLEVELAND — Kris Bryant started to smile even before he fielded the ball. And with his throw to first for the final out, the agonizing wait ‘til next year was over at last.

No more Billy Goat, no more Bartman, no more black-cat curses.

For a legion of fans who waited a lifetime, fly that W: Your Chicago Cubs are World Series champions.

Ending more than a century of flops, futility and frustration, the Cubs won their first title since 1908, outlasting the Cleveland Indians 8-7 in 10 innings of a Game 7 thriller early Thursday.

They even had to endure an extra-inning rain delay to end the drought.

“It happened. It happened. Chicago, it happened,” first baseman Anthony Rizzo said after gloving the ball for the final out. “We did it. We’re world champions. I tell ya, we’re world champions. I can’t believe it.”

Rizzo put that final ball in his pocket as the Cubs piled up in the middle of the diamond, David Ross got carried off the field by his teammates and Bill Murray partied in the clubhouse.

And the whole time, blue-clad fans who traveled from Wrigley Field filled nearly the entire lower deck behind the Chicago dugout at Progressive Field, singing “Go, Cubs, Go!” in rain. They held up those white flags with the large blue “W’’ on a night many of their forebears had waited for in vain.

Lovable losers for generations, the Cubs nearly let this one get away, too. All-Star closer Aroldis Chapman blew a 6-3 lead with two outs in the eighth when Rajai Davis hit a tying, two-run homer.

But the Cubs, after tormenting their fans one more time, came right back after a 17-minute rain delay before the top of the 10th.

Series MVP Ben Zobrist hit an RBI double and Miguel Montero singled home a run to make it 8-6. Davis delivered an RBI single with two outs in the bottom half, but Mike Montgomery closed it out at 12:47 a.m., and the celebration was on.

“I think about so many millions of people giving so much love and support to this team for so many years,” said owner Tom Ricketts, whose family bought the team in 2009.

Manager Joe Maddon’s team halted the longest stretch without a title in baseball, becoming the first club to overcome a 3-1 Series deficit since the 1985 Kansas City Royals.

“This is an epic game. It’s epic. I can’t believe we were able to do it — 108 years in the making,” Zobrist said. “We did it.”

“They never quit, either,” Zobrist said. “They kept coming at us.”

Cleveland was trying to win its first crown since 1948, but manager Terry Francona’s club lost the last two games at home.

World Series favorites since spring training, Chicago led the majors with 103 wins this season.