PHOENIX — The Mets disrespected all mothers on their day by not playing nice.

A no-show lineup has become the norm, but Sunday they added shoddy defense — or run prevention, if you prefer — into the equation and departed the desert with sand in their pants in a 5-1 loss to the Diamondbacks.

It was a second straight game the Mets (15-25) scored only one run after scoring only once in nine innings Friday before adding two in the 10th to win. The Mets lost the series, completing a 5-4 road trip that also included stops in Anaheim and Colorado.

Juan Soto, the team’s best hitter, went 4-for-33 (.121) on the road trip with one homer.

“It’s tough. I have just been missing a lot of balls,” Soto said. “They have been throwing me pitches that I have just been a little under, and I have been working with the hitting coaches, swinging the bat, doing my routine, working on mechanics. You’re at the point where you got to stop missing it.”

If the weak offensive attack (only five hits) wasn’t enough, Andy Ibáñez committed two throwing errors as the starting third baseman. The second of those errors let the D’backs score three unearned runs in the sixth inning to bury the Mets in a 5-1 hole.

D’backs lefty Eduardo Rodriguez brought a no-hitter into the sixth and lasted into the ninth. He allowed one earned run on four hits and three walks over 8 ¹/₃ innings.

“We chased,” manager Carlos Mendoza said. “The few at-bats that we got ahead, he kept going to that changeup and getting ground balls. We didn’t make the adjustment there and we swung at his pitches when we needed to do damage.”

How can Mendoza get players to stop chasing pitches?

“We’re trying to figure it out, because we have been chasing a lot,” Mendoza said. “I think it’s just more when we’re ahead in counts, we have seen that the past few days.”

Huascar Brazobán, chosen as the opener, worked into the second inning and walked Ildemaro Vargas and Nolan Arenado to begin the frame. Tobias Myers got two outs before Ryan Waldschmidt’s double gave the D’backs a 2-0 lead.

Soto walked leading off the fourth to snap a streak of 22 straight Mets batters retired over two games. But the inning went nowhere: After Bo Bichette was retired, Austin Slater grounded into an inning-ending double play.

Soto was asked about the biggest issue facing the lineup.

“There’s no issues right here,” Soto said. “We’re all professionals. We all can handle this stuff, but definitely guys are struggling a little bit right now, but I think it’s going to pass.”

David Peterson allowed a two-out single to James McCann in the fourth and should have escaped the inning on Jorge Barrosa’s grounder. But Ibáñez’s throw from third pulled Mark Vientos off first base for an error. Peterson rebounded to retire Waldschmidt.

Peterson’s two-base throwing error on Geraldo Perdomo’s bunt with two outs in the fifth kept the inning alive. Peterson unloaded a wild pitch that moved the runner to third before retiring Adrian Del Castillo.

Rodriguez pitched 5 ¹/₃ hitless innings before Carson Benge’s bloop single ended the no-hit watch. Luis Torrens followed with an RBI double that pulled the Mets within 2-1. But Soto was retired and after Bichette walked, Rodriguez got Slater to ground out.

Ibáñez’s second throwing error of the day allowed Vargas to reach leading off the bottom of the sixth. Peterson got two outs before Barrosa and Waldschmidt each singled. The second of those hits gave the D’backs a 3-1 lead. Ketel Marte’s ensuing triple widened the deficit to 5-1. All three runs were unearned.

“I stood a little bit wide and [the throw] got away from me,” Ibáñez said through an interpreter.

Peterson did not allow an earned run over five innings in a second straight solid relief appearance.

“I felt like I had command of every pitch,” Peterson said. “I felt like everything was working.”