On January 26, 2019, a 26-year-old Tugstsogt Nyambayar (10-0, 9 KOs) and a 29-year-old Dominican boxer Claudio Marrero (23-2, 17 KOs) met in the ring in a featherweight bout.
Nyambayar came in to the fight on a 10-fight win streak with a 90% KO rate, and was fighting after a gap of 8 months. Marrero was on a 1-fight win streak with a 68% KO rate, and fighting after a layoff of 8 months and 29 days.
Tugstsogt Nyambayar defeated Claudio Marrero via unanimous decision in the 12-round featherweight fight. Nyambayar improves his record to 11-0, while Marrero adds a loss to his record at 23-3.
On May 26, 2018, a 25-year-old Tugstsogt Nyambayar (9-0, 8 KOs) and Óscar Escandón met in the ring.
Nyambayar came in to the fight on a 9-fight win streak with a 88% KO rate, and was fighting after a gap of 6 months and 8 days.
Tugstsogt Nyambayar stopped Óscar Escandón via TKO in the 3rd round. Nyambayar improves his record to 10-0 (9 KOs)
On February 8, 2020, a 27-year-old Tugstsogt Nyambayar (11-0, 9 KOs) got a shot at the featherweight WBC title held by 31-year-old American boxer Gary Russell Jr. (30-1, 18 KOs).
Nyambayar came in to the fight on a 11-fight win streak with a 81% KO rate, and was fighting after a gap of 1 year and 13 days. Russell Jr. was on a 6-fight win streak with a 58% KO rate, and fighting after a layoff of 8 months and 21 days.
Gary Russell Jr. defeated Tugstsogt Nyambayar via unanimous decision and successfully defended his WBC featherweight title. Russell Jr. improves his record to 31-1, while Nyambayar adds a loss to his record at 11-1.
On August 27, 2015, a 23-year-old Tugstsogt Nyambayar (2-0, 2 KOs) and Arturo Badillo met in the ring.
Nyambayar came in to the fight on a 2-fight win streak with a 100% KO rate, and was fighting after a gap of 4 months and 9 days.
Tugstsogt Nyambayar stopped Arturo Badillo via RTD in the 3rd round. Nyambayar improves his record to 3-0 (3 KOs)
On December 8, 2016, a 24-year-old Tugstsogt Nyambayar (6-0, 6 KOs) and German Meraz met in the ring.
Nyambayar came in to the fight on a 6-fight win streak with a 100% KO rate, and was fighting after a gap of 4 months and 23 days.
Tugstsogt Nyambayar stopped German Meraz via RTD in the 5th round. Nyambayar improves his record to 7-0 (7 KOs)
On July 15, 2016, a 24-year-old Tugstsogt Nyambayar (5-0, 5 KOs) and Rafael Vazquez met in the ring.
Nyambayar came in to the fight on a 5-fight win streak with a 100% KO rate, and was fighting after a gap of 2 months and 10 days.
Tugstsogt Nyambayar stopped Rafael Vazquez via TKO in the 1st round. Nyambayar improves his record to 6-0 (6 KOs)
On December 3, 2015, a 23-year-old Tugstsogt Nyambayar (3-0, 3 KOs) and Pedro Melo met in the ring.
Nyambayar came in to the fight on a 3-fight win streak with a 100% KO rate, and was fighting after a gap of 3 months and 6 days.
Tugstsogt Nyambayar stopped Pedro Melo via KO in the 2nd round. Nyambayar improves his record to 4-0 (4 KOs)
On April 18, 2015, a 22-year-old Tugstsogt Nyambayar (1-0, 1 KO) and Manuel Rubalcava met in the ring.
Nyambayar came in to the fight on a 1-fight win streak with a 100% KO rate, and was fighting after a gap of 1 month and 5 days.
Tugstsogt Nyambayar stopped Manuel Rubalcava via KO in the 1st round. Nyambayar improves his record to 2-0 (2 KOs)
On July 3, 2021, a 29-year-old Tugstsogt Nyambayar (12-1, 9 KOs) and a 24-year-old American boxer Chris Colbert (15-0, 6 KOs) met in the ring in a super-featherweight bout.
Nyambayar came in to the fight on a 1-fight win streak with a 69% KO rate, and was fighting after a gap of 9 months and 14 days. Colbert was on a 15-fight win streak with a 40% KO rate, and fighting after a layoff of 6 months and 21 days.
Chris Colbert defeated Tugstsogt Nyambayar via unanimous decision in the 12-round super-featherweight fight. Colbert improves his record to 16-0, while Nyambayar adds a loss to his record at 12-2.
On May 5, 2016, a 23-year-old Tugstsogt Nyambayar (4-0, 4 KOs) and Juan Ruiz met in the ring.
Nyambayar came in to the fight on a 4-fight win streak with a 100% KO rate, and was fighting after a gap of 5 months and 2 days.
Tugstsogt Nyambayar stopped Juan Ruiz via RTD in the 4th round. Nyambayar improves his record to 5-0 (5 KOs)