Jessie Vargas/Photo courtesy of Top Rank Inc.

Dewey Cooper isn’t the most well-known trainer in the world. But his passionate way of answering questions could help grow his popularity.

Cooper on Thursday was part of a conference call promoting the Nov. 5 welterweight title fight between champion Jessie Vargas and Manny Pacquiao (58-6-2, 38 KOs) at Thomas & Mack Center in Las Vegas (on Top Rank pay-per-view, $59.95). Cooper trains Vargas, who has only 10 knockouts in 28 pro bouts. That’s a low knockout ratio of 36 percent.

But Cooper has been telling reporters that he is improving Vargas’ punching power through various techniques and exercises. He scoffs at the notion that a fighter either has power or he doesn’t, and that one can’t improve upon that power.

By the time Cooper was finished explaining to an inquiring reporter, he had left a lasting impression.

“He feels it,” Cooper said of Vargas’ newfound heavier punch. “He feels it in his knuckles, he feels it in his forearm when he hits, he feels it in his hip when he hits and it’s a natural thing, guys. For anyone in the world to say someone cannot improve on something is just ignorant. We can improve our reading speed, we can improve our running speed, we can improve our strength on a bench press, so why wouldn’t we be able to improve our punching power?

“Everything’s about technique and exercise on the right sports specific move that should make you improve. And that’s all we’ve done. It’s not rocket scientist. We’re just smart enough to know not to limit ourselves and our possibilities. We can do the improbable, we could do the impossible, and that’s exactly what’s going to happen on Nov. 5, guys.”

Vargas (27-1) has had one fight under Cooper. That was March 5 when Vargas stopped Sadam Ali in the ninth round to win the vacant title. Vargas decked Ali twice.