By Miguel Rivera

Head trainer Robert Garcia has no doubt that that his brother, Mikey Garcia (36-0, 30 KOs), is capable of becoming the first boxer to stop four division world champion Adrien Broner (33-2, 24 KOs) inside the distance.

The two boxers will face each other in a Showtime televised fight on July 29th at the Barclays Center in Brooklyn, New York City.

Both of Broner's defeats came at the welterweight limit of 147. The fight with Garcia takes place at junior welterweight, with Garcia coming up from the lightweight limit of 135.

Broner's defeats came at the hands of Marcos Maidana (who Robert Garcia trained) and Shawn Porter.

In the loss to Maidana, Broner was dropped twice but sucked it up and lasted until the final bell. With Porter, it was actually Broner who scored a knockdown in the twelfth and final round, but went on to lose a decision.

Broner has serious doubts that Mikey is capable of knocking him out and believes the Mexican-American's power will not be the same at 140-pounds.

"We are training very well. Mikey is looking very strong. I brought in some guys for the sparring who are weighing 154 and 160 pounds, the two of them are strong, and Mikey is hitting them but they are also [making Mikey work]. They are getting tired [in there with Mikey], and a third sparring partner is 140 pounds, faster, with whom [Mikey] pulls in fast combinations, everyone is demanding," Robert Garcia tells ESPN Deportes.

"Mikey at 140 pounds will be just as strong, and I think if the opportunity presents itself he can knock [Broner] out. We think Mikey has the same power that he had at 126 and 130 pounds, even a little stronger than at featherweight and super featherweight - because he killed himself a lot [to make weight], sacrificed muscle and now without any of the weight problems he is much stronger."

"I think the strength of a fighter, coupled with his talent, should not matter if he is fighting at a weight division or two above... talent overcomes all barriers, for example Floyd Mayweather fought at 154 pounds without being a 154-pounder. He fought there because he was talented."