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= Jairzinho Rozenstruik = Jairzinho ‘BIGI ''BOY’ Rozenstruik is a professional heavyweight kickboxing world champion and an undefeated mixed martial arts fighter from Suriname (South America). In December 2018 he signed a four-fight contract with the Ultimate Fighting Championship (UFC).''

Youth
Jairzinho Rozenstruik was born in Paramaribo, the capital of Suriname.

Family
Jairzinho Rozenstruik has x brothers and sisters.

Amateur career
At the age of eighteen, Jairzinho walked into a gym called Rens Project. There he started to take thaibox lessons and soon he was discoverd by a coach Michael Babb (VOS Gym Amsterdam).

Trained by Babb, he came out for the House of Legends under the supervision of Ivan Hipolite.

Just after three months of training, Jairzinho stepped into the ring for the first time. He lost his first match but this only gave him more inspiration to train even harder for his next bout. He won his 2nd match with a KO, and that was the beginning of the young Surinamese BIGI BOY, who later became well known as a true KO specialist. With this, he has managed to put himself on the map nationally and internationally.

Muay Thai record
At the moment he has fought 82 matches. He won 76 and he lost six matches. Of these 82 parties, he won 64 by KO/TKO. 

Mixed martial arts career
In May 2012 Jairzinho won his debut MMA debut fight against Evgeny Boldyrev at DRAKA MMA: Governor's Cup 7 in Vladivostok (Russia).

In November 2012 he won a rematch versus Evgeny Boldyrev at Draka MMA: Governor's Cup 11 in Khabarovsk (Russia).

After five years of focusing on his kickboxing career, he won in April 2017 an MMA match versus Engelbert Berbin during a regional promotion in Aruba.

In December 2017 he won a bout against Marvin Aboeli during a regional promotion in Suriname.

RIZIN
In April 2018, Jairzinho signed a multi-fight contract with the RIZIN FF. 

In May 2018, he won his promotional debut versus Andrey Kovalev at RIZIN 10 by split decision. 

Ultimate Fighting Championship
In December 2018, Rozenstruik announced via Instagram that he signed a four-fight UFC contract. 

On February 02, 2019, Jairzinho won his debut heavyweight fight against Júnior Albini during the UFC on ESPN+ 2 in Fortaleza (Brazil) by TKO. That night he wrote history for being the first-ever Surinamese UFC fighter. 

His second fight is scheduled on Juni 22, 2019 against Allen Crowder at UFC on ESPN+11 Greenville in South Carolina (USA).

On June 22, 2019, Jairzinho Rozenstruik won his second UFC bout against Allen Crowder within nine seconds by knockout. It was the second-fastest UFC knockout in the heavyweight division and Jairzinho was awarded his first "Performance Of The Night" bonus. The bout toke place at the UFC Fight Night 153 in Greenville (USA). 

Jairzinho Rozenstruik is scheduled to fight the former UFC heavyweight champion Andrei Arlovski at UFC 244 on November 2, 2019, in New York (USA). 

MMA record
Jairzinho is an undefeated mma artist and holds a record of eight wins (seven of them by KO/TKO).