BRIAN “The Hawaiian Punch” Viloria lost his International Boxing Federation (IBF) light-flyweight crown to a non-titled Colombian challenger Carlos “El Olimpico” Tamara Saturday.

Colombian Carlos Tamara shocked the Filipino crowd after dethroning Brian “The Hawaiian Punch” Viloria via a 12th round TKO (technical knockout) loss. (Sunnex/Virgil Lopez)

The end came with 1:45 left in the final round when referee Bruce McTavish stopped the fight after Tamara hit the exhausted Viloria with solid combinations, including 14 unanswered punches from the Colombian.

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Viloria then felt some chest pains and collapsed inside the dugout after their match. He was rushed to a nearby hospital.

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The Filipino boxer was a no-show during the post-fight press conference and was first rushed to the San Juan De Dios Hospital, which is near the Cuneta Astrodome in Pasay City, for a routine check-up. He was later transferred to the Makati Medical Center in Makati City.

A television report said Viloria is now conscious and in a stable condition after undergoing a CT scan at the Makati hospital to check if there was brain damage.

“He's barely conscious. He's good. He's stable,” said attending neurologist Regina Macalintal.

The hospital said Viloria will have to stay by one or two more days before being discharged.

An earlier radio report meanwhile said that the deposed champion was conscious and seen talking to his nurse-girlfriend Erika Navarro while being transferred to Makati Medical Center.

Viloria suffered a three-centimeter cut on his left eyebrow and bruises after surrendering the title to Tamara by way of a 12th round technical knockout in the main event of "Boxing at the Bay: Collision Course.”

Before being dethroned, the 29-year-old Filipino-American from Waipahu, Hawaii was ahead on the scorecards until the eighth round, before losing fire near the end.

He had Tamara on the ropes several times in the fifth round, but was unable to finish him off.

“Viloria looked very tired,” Tamara said.

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The ninth round was the day's gamechanger when a determined Tamara turned the tables on Viloria and started a scorching rally.

“From Day 1, we never had a doubt that he would be world champion,” said Tamara’s trainer, Butch Garcia. “He was hungry and he wanted to be a world champion and that was the difference in this fight.”

Garcia added that his ward is now on his third shot for a world title and made true of his plan to return to Colombia with a boxing belt.

As a light flyweight, Tamara 21-4 (15 KO) earned a silver medal for the South American nation at the 2003 Santo Domingo Pan American Games. He also represented his native Colombia in the 2004 Olympic Games in Athens, making it to the second round before dropping a decision to an Italian counterpart.

The loss relegated Viloria to a 26-3 (15 KO) record. Saturday marked the defense of the title he won via an 11th round knockout of heavily favored Ulises Solis at the Araneta Coliseum last April 19, 2009.

Viloria retained the 108-pound division crown four months later via a 12-round unanimous decision over a tough Jesus Iribe of Mexico in Hawaii.

Expected ‘fireworks’

The Hawaiian Punch admitted in a press conference Friday with Cebu journalists that he is facing an uphill battle and a possible knockout is underway for him.

“There will be fireworks. I can go 12 rounds against any fighter. If the KO (knockout) presents itself then I will take it,” he said with the transcript published at boxing site, philboxing.com.

He said he would still continue to fight at the 108-pound division, a weight he has maintained for 15 years.

“Yes, I am still comfortable but I would also like to challenge flyweight champ Koki Kameda of Japan,” said Viloria.

The undefeated Kameda (22-0, 14 KO) is a 23-year-old boxer from Osaka, Japan who currently holds the World Boxing Council (WBC) flyweight title. (Virgil Lopez/Sunnex)