Mets suffer latest ugly disaster to Nationals as nightmare start hits new low

And Wednesday, especially, they looked the part.

Five weeks into the season and with a sky-high payroll, the mismatched disaster that is the Mets roster was overmatched again in a 14-2 loss to the lowly Nationals at Citi Field that wasn’t as close as the score might indicate.

With their latest defeat — when they allowed a season high in runs — the Mets fell to 10-20. That’s a half-game behind their NL East rivals, the Phillies, who were rained out and remained 10-19.

The weather was not as kind to the Mets faithful, as a few thousand masochists stuck around on a miserable, wet night in Queens to watch … what, exactly?

David Peterson delivered his latest awful start, as the lefty’s ERA as a starter jumped to 8.10 after allowing seven runs in just 3 ²/₃ innings.

David Peterson reacts as he walks back to the dugout at the end of the first inning of the Mets’ 14-2 blowout loss to the Nationals on April 29, 2026 at Citi Field. JASON SZENES FOR THE NEW YORK POST

Another rotation castoff, Sean Manaea, was called upon to replace Peterson and allowed a grand slam in the fourth.

And the offense, which briefly awoke during a seven-run fourth inning in Tuesday’s win, went back to its typical ineptness against Washington right-hander Cade Cavalli.

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The lone exception to the collapse was Juan Soto, who looked to be in peak form.

He homered in a second straight game and added a single and a double.

But as everyone from Carlos Mendoza to David Stearns to Soto himself has said, even Soto can’t carry the team by himself.

Sean Manaea reacts after giving up a grand slam to Brady House during the Mets’ blowout loss to the Nationals. JASON SZENES FOR THE NEW YORK POST

The Mets, though, apparently wanted to test that theory against the Nationals, as Soto — serving as the DH again as he deals with left forearm discomfort — provided just about the only positives for a Mets team that’s now dropped four of five.

And there are five months to go.

“We’ve got to play better baseball, period,” Mendoza said before the game. “Regardless of who we’re playing, we’ve got to start winning series. We haven’t been able to do that for a long period of time now. Hopefully the game [Tuesday] night will get us going.”

It didn’t.

And it may have even hurt their chances Wednesday, as Mendoza went to Tobias Myers — who has pitched well out of the bullpen — for two innings with an eight-run lead Tuesday.

So the right-hander was unavailable to either open for Peterson — who started because Washington had two left-handers among their top four hitters — or take over for him in the fourth.

Honestly, it’s hard to fathom any combination of pitchers or position players — short of cloning Soto — would have helped the Mets on Wednesday.

New York Mets catcher Francisco Alvarez reacts after he strikes out looking against the Washington Nationals in the first inning. JASON SZENES FOR THE NEW YORK POST

An announced crowd of 32,624 — and fortunately, not nearly that many actually showed up — made its displeasure known throughout the latest defeat.

As there has been with alarming frequency this season at Citi Field, the booing could be heard at some point during nearly every inning.

With five months to go in what’s already been an interminable season, the Mets surely have hit rock bottom.

But as they’ve proven consistently so far this year, there’s apparently always lower to go.