When is Niyomtrong vs Rosa?
Thammanoon Niyomtrong could face the challenge of Erick Rosa in Summer 2026 Nakhon Sawan.
The fight would be contested over 12 rounds in the Minimumweight division, which means the weight limit would be 105 pounds (7.5 stone or 47.6 kg).
The contest would be for the WBA minimumweight championship of the world.
Niyomtrong vs Rosa stats
Thammanoon Niyomtrong would step into the ring with a record of 29 wins, 2 losses, and 0 draws, 11 of those wins coming by way of knockout.
Erick Rosa would make his way to the ring with a record of 9 wins, 1 loss and 0 draws, with 2 of those wins by knockout.
The stats suggest Niyomtrong would have an advantage in power over Rosa, with a 38% knockout percentage compared to Rosa's 22%.
Thammanoon Niyomtrong is the older man by 9 years, at 35 years old.
Rosa has a height advantage of 2 inches over Niyomtrong. This also extends to a 4-inch reach advantage.
Both Thammanoon Niyomtrong and Erick Rosa fight out of an orthodox stance.
Niyomtrong is currently the more experienced professional fighter, having had 21 more fights, and made his debut in 2012, 8 years and 4 months earlier than Rosa, whose first professional fight was in 2020. He has fought 163 more professional rounds, totaling 262 compared to Rosa's 99.
Niyomtrong vs Rosa form
Thammanoon Niyomtrong has beaten 3 of his last 5 opponents.
In his last fight, he lost to Shokichi Iwata on March 15, 2026, by technical decision in their WBC World Light Flyweight championship fight at Yokohama Buntai, Yokohama, Japan.
Prior to that, he had beaten Junior Leandro Zarate on December 4, 2025, by unanimous decision in their WBC World Light Flyweight championship fight at The Imperial Queens Park Hotel, Bangkok, Thailand.
Going into that contest, he had been beaten by Oscar Collazo on November 16, 2024, by knockout in the 7th round in their WBO World Minimumweight, WBA Super World Minimumweight and The Ring Strawweight championship fight at The Venue Riyadh Season, Riyadh, Saudi Arabia.
Before that, he had won against Alex Winwood on September 7, 2024, by majority decision in their WBA Super World Minimumweight championship fight at HBF Arena, Joondalup, Australia.
He had beaten Wanheng Menayothin on July 20, 2022, by unanimous decision in their WBA Super World Minimumweight championship fight at Chonburi, Thailand.
Rosa has beaten 4 of his last 5 opponents, stopping 1 of them, going the distance 3 times.
In his last fight, he lost to Kyosuke Takami on July 30, 2025, by technical knockout in the 10th round in their WBA World Light Flyweight championship fight at Yokohama Buntai, Yokohama, Japan.
Prior to that, he had defeated Neider Valdez Aguilar on December 19, 2024, by unanimous decision in their WBA Super World Light Flyweight championship fight at Pabellon de Karate, Centro Olimpico, Santo Domingo, Dominican Republic.
Going into that contest, he had won against Yudel Reyes on April 5, 2024, by unanimous decision in their 12 round contest at Pabellon de Esgrima, Centro Olimpico, Santo Domingo.
Before that, he had defeated Orlando Pino on August 25, 2023, by technical knockout in the 8th round at Pabellon de Esgrima, Centro Olimpico, Santo Domingo.
He had beaten Vic Saludar on December 21, 2021, by split decision in their WBA World Minimumweight championship fight at Hotel Catalonia Malecon Center, Santo Domingo.
Activity check
In terms of recent activity, Thammanoon Niyomtrong has been fighting more than Erick Rosa.
Thammanoon Niyomtrong last fought 2 months and 17 days ago, while Erick Rosa's last outing was 10 months and 2 days ago.
Niyomtrong's last 5 fights have come over a period of 3 years, 10 months and 12 days, which means he has been fighting approximately every 9 months and 9 days. In those fights, he fought a total of 51 rounds, meaning that they have lasted 10.2 rounds on average.
Rosa's last 5 fights have come over a period of 4 years, 5 months and 11 days, meaning he has been fighting on average every 10 months and 20 days. In those fights, he fought a total of 54 rounds, meaning that they have lasted 10.8 rounds on average.
What are the odds on Niyomtrong vs Rosa?
Sorry, we couldn’t find any odds for Niyomtrong vs Rosa yet. If odds are not available initially after the fight is announced, bookmakers usually release them closer to the day of the fight.