OAKLAND, Calif. — The Mets kept on walking Friday night — unofficially they got enough steps in to reach the Nevada border — and Francisco Lindor was the chief beneficiary.

Lindor twice came to bat with the bases loaded and in those plate appearances all but maximized his output. The Mets shortstop hit a grand slam and later cleared the bases with a double, leading a 17-6 demolition of the A’s at RingCentral Coliseum.

On a night the Mets walked 17 times (establishing a franchise record and tying for the third-highest total in a nine-inning game in MLB history), Lindor tied a career high with seven RBIs and gave Kodai Senga and the bullpen plenty of cushion.

“We’re a team that when we’re going well we’re real selective and tonight was a good example of that,” manager Buck Showalter said.

Senga ran into pitch count trouble in the fifth and fell one out short of qualifying for the win. The right-hander lasted 4²/₃ innings and allowed four earned runs on seven hits with seven strikeouts and four walks, departing after 96 pitches.

The A’s looked every bit a team that has lost 11 times in 14 games to begin the season. Mostly, they couldn’t or wouldn’t throw the ball over the plate.

Was it a case of the Mets showing extreme patience or were Oakland pitchers just off with their control?

“Both,” Lindor said. “The guy that started today [James Kaprielian], he can command all his pitches usually, but he lives off hitters chasing and today we didn’t.”

Lindor delivered the knockout punch with his three-run double in the fifth, after the Mets for the second time in the game had forced in a run and kept the bases loaded without the benefit of a hit. In this case, Eduardo Escobar, Luis Guillorme and Tomas Nido had all walked and Brandon Nimmo was hit by a pitch.

“I took the same approach that everyone before me had — get a good pitch and try to drive it,” Lindor said. “They just didn’t get the pitch. I got the pitch. Today it was me and tomorrow it will be somebody else. That is the beauty of having a good team.”

The Mets utilized five walks and Lindor’s grand slam to take a 6-0 lead in the second inning. Daniel Vogelbach walked leading off the inning and with one out Kaprielian threw eight straight balls to Guillorme and Nido, loading the bases. Nimmo walked to force in a run before Lindor cleared the fence in right-center for his sixth career grand slam and third homer of the season.

Senga, after allowing a bloop RBI single in the third, got hit hard in the fourth: Connor Capel smashed a single before Shea Langeliers delivered a two-run homer that sliced the Mets’ lead to 6-3. Oakland kept the inning going with Tony Kemp’s two-out walk before Ryan Noda struck out but reached first base on Nido’s passed ball. In the fifth, Aledmys Diaz homered for Oakland’s final run against Senga.

Senga’s outing was his shakiest of his three starts to begin his major league career, but the extended time between innings and cool weather didn’t help: Senga threw pitches in the bullpen to remain warmed up as the Mets were batting around in the fifth — it was the second inning in which they sent at least nine batters to the plate.

“I don’t think I was able to pitch my own game,” Senga said through his interpreter. “It just kind of dragged on from the other side and let that bring me down a little bit.”

Senga added: “The longer innings cooled down my body and I was unable to stay hot and there isn’t much space for me to move around and get warmed back up for the next inning. That is something I need to prepare for next time.”

Stephen Nogosek got smoked on the right elbow (imaging was negative) on Jace Peterson’s line drive with two outs in the sixth and was forced to leave the game after recording only three outs. Nogosek was replaced by Dennis Santana, who pitched 2¹/₃ innings before John Curtiss worked the ninth.

In the top of the ninth Jeurys Familia walked four batters and was removed with the A’s trailing 14-6. Catcher Carlos Perez entered and allowed a double to Escobar that brought in two additional runs. Guillorme, who reached base five times, delivered an RBI single in the inning.