The unrelenting lineup the Mets might have envisioned when J.D. Martinez arrived in late April has been slow in developing, but there are days like Friday to offer a reminder of what can still be. 

There was Francisco Lindor atop the batting order reaching base three times and the crew behind him applying pressure in almost every inning.

Included was Martinez going deep for a second straight night as needed ammunition in a 10-9 victory over the Diamondbacks at Citi Field. 

The Mets have consecutive victories for the first time since May 6-7.

And the scoring output was their second-highest total of the season. 

Martinez, who hit a go-ahead homer in the eighth a night earlier in perhaps his first big moment wearing a Mets uniform, contributed to a 14-hit attack against Jordan Montgomery and Arizona’s bullpen. 

“It’s great that [Martinez] has been having success and he’s a real motivating factor and an example for us,” Starling Marte said through an interpreter. “The way that he prepares and the work he puts in, and for him to have success and drive in runs the way he does, it’s going to help the team go a long way.” 

The victory was the Mets’ second straight since a Wednesday team meeting called by Lindor that followed the team’s getting swept three games by the Dodgers. 

Reed Garrett allowed homers to Joc Pederson and Christian Walker in the ninth, accounting for four runs, to add drama to this one before recording the final out.

The Mets needed every last bit of offense to survive. 

“At some point, this is what was expected — good at-bats, top-to-bottom and guys controlling the strike zone,” manager Carlos Mendoza said. “Taking the walks, doing the damage … just overall creating traffic and getting the big hit. We know what we’re capable of and we are seeing some real good signs right now.” 

Luis Severino slogged through one of his roughest starts of the season, allowing five runs, one of which was unearned, on six hits and one walk over 5 ¹/₃ innings.

The right-hander got hit hard, with nine balls off the bat registering at least 95 mph. 

But Severino — whose velocity dipped in the early innings — said he wasn’t feeling well and munched on honey flavored “gummies” to help restore his energy. 

Severino got dented for three runs in a first inning in which he allowed three hits, balked and hit a batter. Pederson and Lourdes Gurriel Jr. each delivered an RBI single in the inning before the D-backs extended their lead to 3-0 on Jake McCarthy’s RBI fielder’s choice. 

But the Mets attacked Montgomery in the bottom of the inning, with Marte’s bases-loaded triple delivering much of the damage.

Mark Vientos’ RBI single gave the Mets a 4-3 lead. 

Lindor walked leading off and Brandon Nimmo doubled before a walk to Martinez loaded the bases.

Marte’s shot into the left-center gap became his second triple of the season. 

“For us to put runs back on the board and go retake the lead was, I think, one of the most important parts of this game,” Nimmo said. 

Lindor stroked an RBI double in the second that widened the Mets’ lead to 5-3.

Tomas Nido doubled leading off the inning and Lindor, a night following his 4-for-4 performance, delivered for the Mets’ fifth hit in two innings. 

Nido was called for a catcher’s interference with Pederson at the plate in the third, helping the D-backs pull within 5-4 on Gurriel’s RBI fielder’s choice.

Jose Iglesias’ throwing error on the play allowed Gurriel to reach second with two outs before Severino retired McCarthy. 

But Nido’s walk leading off the fourth spurred another big inning for the Mets. Pete Alonso delivered an RBI double — following a wild pitch that advanced Nido to second — and Martinez reached on shortstop Kevin Newman’s fielding error.

Marte and Vientos each delivered an RBI single, increasing the Mets’ lead to 8-4. 

Montgomery lasted only four innings and allowed eight runs, two of which were unearned, on nine hits and three walks with four strikeouts. 

Severino was removed after surrendering a solo homer to Eugenio Suarez in the sixth that pulled the D’backs within 8-5.

It was only the fifth homer allowed this season by Severino, but three have been surrendered in his last four starts. 

Martinez homered to right field in the sixth to bring in the Mets’ final runs. 

“The guys came hot today, the hitters, since the first inning and backed me,” Severino said. “I wanted to go out there and throw a shutout, but it was a fight today.”