OAKLAND, Calif. — Rickey’s World delivered some breaking news on Tuesday.

“He told me this was his last go-round, so he had a good one,” Rickey Henderson said of…CC Sabathia, who has repeatedly declared, announced, podcasted and tweeted, among other methods of communication, that 2019 will be his last season as an active player since re-signing with the Yankees last November.

Of course Rickey didn’t know of the development until Sabathia personally informed him at the Oakland Coliseum, before the A’s opened their season series against the Yankees with a 6-2 victory. It’s what makes Rickey Rickey. It’s a primary reason why the Hall of Famer is beloved personally as well as professionally throughout the baseball world, his imperfections notwithstanding.

And consequently, it enhances Sabathia’s stature that he has permeated Rickey’s World sufficiently enough that he received the highest praise of all from the native Northern Californian.

“Oh yeah. He’s got to be in Cooperstown,” Henderson told The Post of Sabathia. “He did too much to not be in Cooperstown.”

Henderson, who now works as a special assistant to A’s president David Kaval — who, in turn, led the charge to call the playing surface here “Rickey Henderson Field” — was born in Chicago in 1958 and moved to Oakland when he was seven, and he played high school ball at Oakland Tech, from where the A’s selected him in the fourth round (96th overall) of the 1976 amateur draft. He proceeded to spend a remarkable four separate stints with the A’s, playing on their most recent championship team in 1989 and winning AL Most Valuable Player honors with them the subsequent season, as well as clocking time with eight other teams, including the Yankees and Mets.

On July 21, 1980, Henderson went 2-for-5 with a homer and two RBIs (although no stolen bases, shockingly) to help the A’s defeat the Indians, 6-5, in 14 innings. About 30 miles to the north in Vallejo, meanwhile, Margie Sabathia gave birth to a son, Carsten Charles Sabathia.

When CC Sabathia made his big-league debut on April 8, 2001, after excelling at Vallejo High School and getting chosen by the Indians in the first round (20th overall) of the 1998 draft, Rickey was playing for the Portland Beavers, the Padres’ Triple-A affiliate, ramping up after signing with the Pads late that spring training. The two men actually played together in the American League in 2002, as Henderson toiled for the Red Sox while Sabathia developed in Cleveland. Sabathia faced Boston once that year, on Sept. 17 at Fenway Park, yet in a historic mistake rivaling his decision to not lift Pedro Martinez from the AL Championship Series Game 7 the next year, Bosox manager Grady Little didn’t start the righty-swinging Henderson against the southpaw Sabathia. Another opportunity for a mano-a-mano didn’t arise, as Rickey ended his career in 2003 with the Dodgers following the All-Star break, by which point interleague play had concluded.

Now Sabathia will hang them up, concluding a 41-year run of East Bay excellence in the big leagues between the two men.

“He had a great career,” Henderson said. “The biggest thing, he’s from here so it’s an honor that we’re from the same area and he had success (in the majors). It’s just good to see that he’s finishing his career.”

Shortly prior to Tuesday’s first pitch by Homer Bailey, the A’s honored Sabathia in a home-plate ceremony, donating $1,500 to the big lefty’s PitCCh In Foundation. On Monday, Sabathia and his wife Amber distributed backpacks to the students at Joseph H. Wardlaw Elementary School in Vallejo.

“He’s been a big part of the community here,” Henderson said of Sabathia. “He’s done an excellent job for the community as well as his career.”

And as soon as 2025, the first year Sabathia will be eligible for the Baseball Hall, Rickey and CC should be neighbors in another wonderful community. Getting Rickey’s blessing for that exclusive neighborhood marks a pretty good starting point.