LAS VEGAS – For being such a mouthful, Argentina’s Guido Emmanuel Schramm was effectively a no-name among the boxing reporters who gathered around him following a workout session.

A replacement opponent to fight consensus top-10 junior-middleweight contender Jesus Ramos Saturday night at Mandalay Bay, Schramm conjured memories of David Peralta, the Argentine taxi driver who was summoned from more than a year-long layoff and upset former two-division champion Robert “Ghost” Guerrero in 2016.

“All you do is box?” I asked Schramm, seeking to rule out if he, too, had some kind of interesting side hustle.

“Yes, boxing. Only boxing,” Schramm, 29, said with a determined expression that bordered on being insulted.

“We’re going to pound the table and we are here to win. You guys are going to see what I’m capable of and you’re going to see me pull off the upset, no doubt.

“I’m a warrior, and I’m ready. I didn’t come here just to cash a check.”

Minutes later, Schramm, 16-3-2 (9 KOS), revealed he’s sparred often with countryman and former 154lbs title challenger Brian Castano, and “some American champions, too.”

Those champions include none less than impending International Boxing Hall of Fame inductee Manny Pacquiao and three-division and current WBA lightweight champion Gervonta “Tank” Davis.

“I’ve trained with many champions and I’ve learned a bit from each of them. It’s truly been a privilege,” Schramm said.

Asked by boxing reporter Sean Zittel if those fighters gave Schramm “the thumbs up,” indicating he had championship skill, he said, “Every single one of them.”

He sparred with Pacquiao before his 2021 welterweight title bout against Cuba’s Yordenis Ugas and met Davis before his 2022 knockout of Rolly Romero.

Suddenly, Schramm had the inquisitors eating out of the palm of his hand.

Who was the harder puncher? Who was the better fighter between those two?

“Tough question, because they’re both excellent fighters,” Schramm said. “I would say Gervonta packs the harder punch, but Pacquiao’s speed … whew! … is incomparable. I really enjoyed sparring with both of them, and they’re both all-time greats.” 

He hopes to revert to being unknown, providing an element of surprise against Arizona’s Ramos, 22-1 (18 KOs), who’s ranked No. 8 by the WBO and IBF and No. 4 by the WBC and WBA.

“Look, it’s boxing. You can have a game plan and study whoever you want,” Schramm said, “and then, two minutes into the fight, everything falls apart. If they have or haven’t studied me, I could care less, because I’m going to do my thing Saturday night. The goal is to become a world champion.”

Schramm said he feels destiny is in play.

Three years ago, he was in Las Vegas with friends and stopped in front of Mandalay Bay, having them snap a picture of him as he told them, “Someday, I’m going to fight here.”

A friend just sent him the photo with the caption, “You … made it.”

Given his first name, Zittel wondered if Schramm was an Italian Argentinian like retired NBA champion Manu Ginobili.

Keeping with the “You think you know me, but you don’t” theme, Schramm said no.

“I have German grandparents,” he said.