When Gesias "JZ" Calvancanti took home the K-1 HERO'S lightweight tournament title last October, he instantly became a prospect to watch in the 155-pound class.

Since then he has done nothing to dissuade his believers, who feel the only thing keeping him from stardom is the chance to perform on a brighter stage.

The 23-year-old fighter will face his stiffest task to date on Sept. 17, when he'll have to win twice in one night to capture this year's installment of the tournament that launched his name into the consciousness of the MMA community. The first man standing in JZ's way is Vitor "Shaolin" Ribeiro.

Both Ribeiro, 19-1-0, and Calvancanti, 12-1-1, have just a single loss each on their records, with both defeats coming in 2004. Ricardo Liborio (Pictures), Brazilian jiu-jitsu legend and Calvancanti's trainer, says the comparison doesn't stop there. He notes the work ethic both fighters have ingrained in the fabric of their characters, as well as the athleticism that has been a calling card for both throughout their careers.

"Nobody trains harder than this kid," Liborio says of Calvancanti, explaining why his charge will prevail in the highly anticipated semifinal match. "He's always running the extra mile, he's always drilling more, he's always shadowboxing. And you say, ‘Man, this kid, it wasn't enough?' And it was enough -- it was enough for everybody, but he has that, ‘I want to be the extra, I want to be the plus, I want to be the champ.'"

That drive has been there since JZ arrived at Liborio's American Top Team gym in Coconut Creek, Fla., in 2003. Although the hours have been long and the work difficult, the talented lightweight has a simple explanation as to why his young career has been a success.

"We have a lot of guys here, the best coaches in the world, the best fighters in the world, so I have confidence from this," Calvancanti says. "I have to learn. I have to improve everyday when I come here; so when I go to the fight, I go with everything."

The 2006 HERO'S champion almost didn't get to defend his title due to an injured right hand. However, he got the call to join the tournament in the semifinals. If he beats Ribeiro, he'll fight the winner of Caol Uno (Pictures) vs. Andre Dida.

Calvancanti doesn't say much about his opponents. "I look [at] myself," he says. "I don't like to look for the other people. That is the job for my coach."

His coaches are more than happy to sing the praises of their fighter, whom they say is a prototypical mixed martial artist.

Mohammed Ouali, Calvancanti's muay Thai trainer, describes JZ's striking ability as both "fluid" and "powerful."

Liborio points to Calvancanti's heart and discipline, saying that's what separates the great fighters from the good ones. Those traits, Liborio says, are the difference between prospects who fail to reach their potential and those who surpass the imaginary limit imposed by so-called experts such as yours truly.

"It's good that people see him as the underdog right now, but it's not going to [stay that way] for a long time, believe me," Liborio says. "Nobody is unbeatable, but I guarantee you one thing: This kid has the game to get there and beat anybody and in any game. It's just a matter of time for him."

That time may come against Ribeiro, a crafty veteran with solid wrestling and a top-of-the-line submission game. In terms of strategy, Calvancanti says it is best to keep things simple: "Fight!"

The response is more a testament to his confidence in all aspects of the game than a lack of a plan. While he shies away from bold statements or predictions, JZ is clearly a man with confidence in his capabilities. It is that self-assurance and his varied skills that inspire his coaches to do the predicting for him.

"Shaolin can't stand up with JZ," Liborio says. "I don't think Shaolin can take him down easily, and even if you go to the ground … Shaolin is not going to [out-grapple him]. It's just impossible for him to go over and submit JZ very easily. This is not going to happen. JZ is more well rounded -- that's a reality."

Liborio acknowledges that the fight won't be easy, though. "Whoever wins this fight will be very tired or hurt for the next fight," he says. "That I know. I consider the winner of this fight the champion of the whole tournament. I think it's the best and most important fight in the whole tournament."

Calvancanti, as modest and soft-spoken a figure as you will find in MMA, allows himself one pre-fight compliment and only in tandem with one for his opponent.

"I think it's going to be exciting because we both are complete guys," he says almost blushingly. "He's [older] than me. He is more experienced … so it's going to be a very, very good match."

From the mean streets of Rio to the manicured suburbs of Fort Lauderdale, it has been some kind of journey for the young man who may well be one of the best up-and-coming fighters in the world. Even though fans might not be too familiar with him at the moment, JZ understands. The recognition, he says, will come with time and continued success.

"I love what I do, so I enjoy every day," he says. "I wake up and do what I love. It's perfect for me. So it doesn't matter if people don't know me yet, but I know if I'm doing the right thing -- you know, the good thing -- it's probably gonna come."

As for short- and long-term goals, the HERO'S champ remains refreshingly cognizant of the fact that he is living a dream.

"I will keep on doing what I am doing," he says. "I can live doing this. I can live doing what I love. If you wake up and go to sleep, and in between you do what you love, man, you are successful. So that is my goal. I want to keep doing this as long as I can."