Jermell Charlo believes beating Brian Castano on Saturday night could strengthen his legacy enough that it would warrant consideration for the International Boxing Hall of Fame.

Houston’s Charlo can become boxing’s first fully unified 154-pound champion in the four-belt era by conquering Castano. The IBF/WBA/WBC champion also can secure his place as the sport’s sixth fully unified, four-title champion in any division if he wins against Argentina’s Castano in their Showtime Championship Boxing main event at AT&T Center in San Antonio (9 p.m. ET; 6 p.m. PT).

Barring a draw, the Castano-Charlo winner will join junior welterweight champ Josh Taylor, ex-cruiserweight champ Oleksandr Usyk, former junior welterweight champ Terence Crawford and former middleweight champs Bernard Hopkins and Jermain Taylor as boxing’s fully unified champions during the four-belt era.

“This could be the fight, you know, this could be the fight that put [me] in the Hall of Fame,” Charlo said during a virtual press conference recently. “I mean, I won a world title at the same weight division with my brother. That was legacy moments as well. So, I mean, I don’t know when it’s gonna be enough for you guys. But y’all not getting in the ring, so y’all don’t really understand. So, truthfully, to be honest with you, this fight is right. This the one that I need. This the one that I want.”

Most Internet sports books list Charlo (34-1, 18 KOs) as more than a 2-1 favorite versus Castano (17-0-1, 12 KOs).

The 31-year-old Castano, a former WBA 154-pound champion, will make the first defense of the WBO junior middleweight title he won when he thoroughly beat Brazil’s Patrick Teixeira (31-2, 22 KOs) by unanimous decision in their 12-round fight February 13 at Fantasy Springs Resort Casino in Indio, California. Charlo knocked out the Dominican Republic’s Jeison Rosario (20-3-1, 14 KOs) in the eighth round of his last appearance, September 26 at Mohegan Sun Arena in Uncasville, Connecticut, to add the IBF and WBA belts to his WBC championship.

“I mean, this is a major fight,” Charlo said. “You know, it’s history for me and my family, it’s history for me and my brother, it’s history for just for me and everybody, you know, that I represent, that represent me. My city of Houston, people that’s just been supporting me for all of these years and it’s just like, you know, it was due time, you know, to get in there and fight somebody. So, now I’m here. You know, it’s the time to let this moment just settle in.

“Nobody’s ever done it, you know, since those days and when they did do it, it wasn’t four belts. But like the belts aren’t on my mind. The belts are not on my mind. The money, none of that’s on my mind. What’s on my mind is just fight and the legacy behind this fight and what I do when I gotta get in that ring. So, I know the belts gonna be there. That’s trophies.”

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