The Yankees‘ hot start came to a screeching halt this Tuesday, and Mark Leiter Jr. found himself at the center of the fanbase’s fury. New York fell 7-5 to the Diamondbacks, suffering their first loss of the season—and Leiter’s eighth-inning collapse was the defining moment.

It wasn’t just a bad outing. It was, in the eyes of many Yankees fans, inexcusable.

The Yankees held a 4-3 lead when Leiter was called upon to protect it. But what followed was a nightmare: the righty walked the first two batters he faced, struck out Josh Naylor, then left a splitter hanging over the plate. Eugenio Suarez didn’t miss, launching a grand slam into the left-field seats to give Arizona a 7-4 lead.

That blast—Suarez’s fifth of the year—was enough to sink New York despite another power-filled night from their offense. The Yankees homered three times, including Anthony Volpe’s third of the season and Ben Rice’s late solo shot. But none of that was enough to erase the sting of that five-run eighth.

Leiter’s final line: 0.2 innings, one hit, two walks, one strikeout, and four earned runs. In a game where rookie Will Warren delivered a strong outing and the offense set an MLB record with 18 home runs through four games, Leiter’s meltdown was a gut punch.

Here’s a smoother and more natural rewrite of that section with improved flow and readability, while keeping the tone sharp and engaging:

Fans turn on Mark Leiter Jr.

The moment Eugenio Suárez’s grand slam landed in the left-field seats, Yankees fans made their feelings known—and Mark Leiter Jr. was squarely in the crosshairs.

“DFA LEITER,” one fan posted. “GET HIM OFF MY DAMN TEAM.”

The reaction spread quickly across social media. “Mark Leiter Jr. has sucked from the moment he put on a Yankees uniform,” one person wrote. Another added, “Why is Boone still using this guy?” One especially blunt post simply read: “That was inexcusable.”

Even on Pinstripes Nation’s facebook page, where fan takes are usually more measured, frustration boiled over. Many questioned why Leiter is still on the roster at all—and why Aaron Boone continues to trust him in high-leverage situations.

Not everyone was entirely focused on Leiter, though. One fan pointed out that the offense deserves its share of the blame: “He was bad, no doubt. But the top of the order went 1-for-18. That’s where we lost the game.”

Still, it was Leiter’s outing that shifted the night. His final line: 0.2 innings, one hit, two walks, one strikeout, and four earned runs. On a night where the Yankees were poised to start the season 4-0, one bad inning changed the entire script.

A strong start spoiled

The loss was especially tough to swallow because rookie Will Warren delivered one of his best performances in a Yankees uniform.

Making just his seventh big league appearance, Warren allowed only one hit and two runs over five innings. He struck out four, walked four, and retired the first eight batters he faced. His only major mistake? A two-out walk to Geraldo Perdomo, followed by a two-run homer from Corbin Carroll in the third inning.

Still, Warren outpitched Arizona’s new ace, Corbin Burnes, who was making his team debut after signing a $210 million deal. Burnes lasted just 4.1 innings, giving up four runs (two earned). Warren was in line for his first career win—until the bullpen let it slip away.

The homers keep coming

The loss didn’t slow down the Yankees’ home run pace. Anthony Volpe crushed his third of the season, Jasson Dominguez launched his first, and Ben Rice added a solo shot in the ninth. That brought the team’s season total to 18 home runs—an MLB record through four games.

Volpe’s power surge has been especially interesting. He’s collected just three hits so far this season, and all three have left the yard. He continues to thrive with the Yankees’ much-talked-about “torpedo” bat, designed with an elongated barrel to increase hard contact.

Dominguez, swinging a more traditional bat, impressed too. Along with his homer, he made a strong defensive play in left field and showed signs of the complete player the Yankees hope he can become.

But even with the power on display, the bats couldn’t bail out the bullpen.

What now?

Tuesday night’s loss was a reality check. The Yankees were never going to go 162-0, and in baseball, momentum can shift in an instant.

Mark Leiter Jr.’s role is now under the microscope. With closer Devin Williams on paternity leave and setup man Luke Weaver held back for the ninth, Boone turned to Leiter—and it blew up in his face.

As “That’s Life” played through the stadium speakers after the final out—a tradition for losses now that “New York, New York” is reserved for wins—the vibe in the Bronx shifted. The undefeated buzz faded, replaced by frustration.

The Yankees will look to bounce back on Wednesday night behind Carlos Rodón, who’s set to face Arizona’s Zac Gallen. It’s only one game—but for Mark Leiter Jr., it might be the one fans remember most.

What do you think? Leave your comment below.