LOS ANGELES » Two days before his attempt to unify two world flyweight championships, Waipahu’s Brian Viloria expressed the intensity of his determination.

"I do well when there’s a big task ahead of me," he said. "If you put a big obstacle, a big challenge in front of me, that’s when the best of Brian Viloria comes out."

Hernan Marquez discovered what Viloria meant Saturday night at the Los Angeles Memorial Sports Arena.

Viloria succeeded not only in defending his World Boxing Organization title, but added the World Boxing Association’s belt by stopping the 24-year-old Mexican with a technical knockout at 1:01 of the 10th round.

The Waipahu native, nicknamed "The Hawaiian Punch" and ranked first in the world among flyweights, used the 19th knockout of his professional career to improve his record to 32-3, and extend his winning streak to six bouts.

Viloria also ended the third-ranked Marquez’s seven-match winning streak. Marquez, nicknamed "Tyson" for his powerful hands, also now has a 32-3 record.

After entering the ring to the theme song from the original "Hawaii Five-0" television series, Viloria became the early aggressor. Viloria used his left jab to set up his powerful right, and knocked the Mexican southpaw down for 7 seconds with about 15 seconds left in the first round.

For the next three rounds, Marquez boxed defensively. Marquez chose to concede the center of the ring and avoid Viloria’s power, hoping the WBO champion would tire himself out. Viloria sensed the tactic and fought in restrained fashion.

In the fifth round, however, Marquez changed tactics. The WBA titleholder claimed the center of the ring, forcing Viloria to the periphery, and unleashed a wild flurry of punches with Viloria on the ropes. But Viloria escaped and used a right-left-right combination to fell Marquez for the second time. A right hook sent Marquez down for seven seconds.

With the heavily Latino crowd chanting "Ty-sohn" and "Meh-hee-co," both fighters began punishing each other. Viloria successfully avoided Marquez’s attempt to pin him along the ropes, yet Marquez launched three successive right uppercuts into Viloria’s face in the ninth round.

Marquez also received two warnings from referee David Mendoza: one for pushing Viloria to the canvas in the eighth round, another for hitting him on the back of the head in the ninth round.

Then 30 seconds into the 10th round, Viloria unleashed a left hook to Marquez’s face that forced the WBA champion down for 9 seconds. After he rose, Marquez suffered more blows for another 30 seconds before his corner waved the towel.

Just before being proclaimed the victor, the Waipahu native kept a promise he made two days earlier.

Clad in metallic kelly green trunks with a gold waistband — along with a wide smile on his face — Viloria jumped on one of the corner pads and performed a brief hula dance.