Gabe Rosado trained for his last fight as if he, not Julio Cesar Chavez Jr., would actually battle Daniel Jacobs.

Predictably, Chavez came in nearly five pounds overweight for that December 20 bout in Phoenix. Jacobs boxed Chavez anyway, which left Rosado, a contracted backup for Chavez, to out-point Mexican veteran Humberto Gutierrez Ochoa following the main event, in an essentially empty Talking Stick Resort Arena.

Rosado now wants to train for a fight against Jacobs that’ll definitely happen. The veteran from Philadelphia called out Jacobs again Friday during an Instagram Live interview with promoter Eddie Hearn.

“I will knock out Daniel Jacobs if the fight happens,” Rosado said. “Because I can beat Daniel Jacobs. I see a lot of flaws in his game. I think he’s more hype than anything. I like the guy, but I don’t think he’s what they make him out to be. So, I would definitely like to fight Jacobs and knock him out, and do what Canelo didn’t do or [Golovkin] didn’t do.”

Jacobs, a former IBF and WBA middleweight champion who lost unanimous decisions to Alvarez and Golovkin, previously expressed interest in facing Rosado next in his own Instagram Live interview with Hearn late last month. Brooklyn’s Jacobs called Rosado “annoying” and “a little weasel” who’s jealous of the cancer survivor’s success in the ring.

“I think it comes from we’re two East Coast guys,” Rosado said of the beef between them. “He’s from Brooklyn. I’m from Philly. And me and him were supposed to fight years ago. It was way back from when I fought Peter Quillin for the world title, which was a fight I was winning, and it got stopped on cuts at the end. [Jacobs] was up to fight the winner. And then it kinda just stirred from there, where we were supposed to fight, and it never happened.

“And then I said some things about him that he didn’t like. I called him a bootleg Andre Ward. He didn’t like that. And then he threw shots back, and that’s just where it came from. But, you know, I been calling him out, been wanting to fight. I think the fight is huge just in boxing – period. But especially if it [was on] the East Coast, being that he’s from Brooklyn. I’ve headlined in Brooklyn [at Barclays Center] and in Madison Square Garden. So, I have a big fan base in his hometown. So, it’s just one of those fights that should happen.”

Hearn, whose company promotes Jacobs and Rosado, also wants to schedule their fight soon after the coronavirus crisis ends.

“I love Jacobs against Rosado, and I like it on the East Coast,” Hearn said. “I like the buildup, I like the fight, I like everything. So, we’ll see when we’re back up and running. It’s a fight we’ll definitely look to make.”

Jacobs (36-3, 30 KOs) and Rosado (25-12-1, 14 KOs, 1 NC) both moved up from middleweight to super middleweight for their December 20 bouts.

The 33-year-old Jacobs stopped Mexico’s Chavez (51-4-1, 33 KOs, 1 NC) after five rounds, despite Chavez’s weight advantage. The 34-year-old Rosado (25-12-1, 14 KOs, 1 NC) beat Ochoa (33-9-2, 22 KOs) by unanimous decision in a 10-rounder that occurred right after Jacobs beat Chavez.

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.