As he makes his hometown debut in Las Vegas, there is only one dilemma for Nico Ali Walsh. 

He doesn’t want it to be over. 

Ali Walsh, the grandson of Muhammad Ali, opens up his fight on the highly-anticipated Shakur Stevenson-Oscar Valdez world title unification card (10 p.m., ESPN) at MGM Grand Garden Arena against Alejandro Ibarra Saturday night. Muhammad Ali’s daughter, Rasheda Ali, and her husband Robert Walsh raised Ali Walsh in the Las Vegas area, and the middleweight currently attends UNLV. 

“It’s definitely something I’ve been dreaming of,” Ali Walsh told The Post. “I didn’t think it was going to happen this early in my career, so it’s a huge honor. Especially because this fight in particular is probably going to be one of the fights of the year. This is gonna be a huge, huge honor. It’s gonna be an electric night. I don’t want the night to happen already, because I already feel like I miss it.” 

The 21-year-old Ali Walsh, just 4-0 in his young career, knows he is being “fast-tracked” due to the weight and intrigue his last name carries. With a lack of a “huge amateur pedigree” and still largely unproven, he knows he perhaps got this opportunity before other fighters would have. 

He also knows fans will be seeing a new-and-improved product. 

After defeating Reyes Sanchez at Madison Square Garden in December – a fight he admitted he struggled in – Ali Walsh secured an impressive TKO victory over Jeremiah Yeager in January. He looked more polished in just the short period of time between fights. 

Ali Walsh expects the extra time before Saturday night’s fight to be a game-changer. 

“It’s actually crazy,” he said. “It wasn’t even a couple of months, it was almost like a month and a week apart, there was no time at all, and I felt like I changed so much. My defense had improved a ton, just my overall composure in the ring improved, between fights three and four. And that was no time at all. This is the longest time I’ve had between fights, so this is the biggest improvement you’ll see between fights.”

To make up for his lack of an amateur background, Ali Walsh, who believes every fight is “won weeks, maybe even months before the fight,” says he spars and trains with top fighters and gets extra rounds in the gym. 

One of those top fighters is super middleweight star Edgar Berlanga. The Brooklyn native is 19-0 and rapidly climbing into the top 10 in the division. 

“He’s amazing,” Berlanga told The Post. “Some people get off him as cocky, but when you get to really meet the kid, he’s a humble kid. Especially with him having that background with Muhammad Ali being his grandfather, all that stuff, he’s just a humble kid, he works very hard in the gym.” 

During his preparation for the bout, Ali Walsh had an extra variable most boxers don’t have – college graduation, something he admitted can be “annoying at times, but you can make time for anything.” He’ll have friends from school in attendance for his fight in addition to his family. 

Beyond the comfortability of training and staying in his hometown, Ali Walsh believes being able to train every day at the Top Rank gym he’s grown accustomed to will reap its rewards inside the ring. 

“That’s what’s most comfortable to me, that’s the big advantage here, because there’s nothing like being in the gym you’re in every single day.”