By Steve Kim

This Saturday night from the Forum in Inglewood, California, Lucas Matthysse faces Tewa Kiram for the vacant WBA "regular" welterweight title.

For the 35-year-old from Argentina, a victory would mean picking up his first major world title belt. Matthysse had failed in his two previous title attempts - against Danny Garcia in 2013 and Viktor Postol in 2015.

Matthysse (38-4, 35 KO's), has had a storied career, but at age 35 just how much does he have left?

Back on May 6th he stopped Emmanuel Taylor impressively in five rounds in what was his first outing with trainer Joel Diaz.

Diaz told BoxingScene.com - "Lucas right now, after his last fight he came back strong. I think he has a few more fights. From my experience I give him at least three-to-four more fights at the top level because he's got motivation but we don't know how he feels after every fight at this point.

"But after his fight he was motivated, happy and most of all coming to camp for that Taylor fight he was skeptical and for this fight he was pushing for his manager like, 'I want to go.' So right now what I like about Lucas is his motivation. He's happy, he trains happy everyday, always joking around, always happy and he already broke the ice from the first camp."

Matthysse spent the holidays and New Year's in Indio to work with Diaz on a daily basis at the Indio Boy's and Girls Club. The trainer believes that he and 'the Machine' have now developed a rapport with one another.

"Now he's comfortable and we know each other more and he knows what I expect from him at certain times," said Diaz, who says training a fighter in his mid-30's requires adjusting to their age.

"You have to because when they're younger you can put more work in, now they have more experience. Now you have to monitor their work and focus on what's more important, the plan of attack."

Steve Kim is the news editor for BoxingScene.com.