On March 12, 2021, a 36-year-old Kwanthai Sithmorseng (50-7-1, 27 KOs) and a 34-year-old fellow Thai boxer Srisaket Sor Rungvisai (49-5-1, 42 KOs) met in the ring.
Sithmorseng came in to the fight on a 1-fight win streak with a 46% KO rate, and was fighting after a gap of 2 months and 12 days. Rungvisai was on a 2-fight win streak with a 76% KO rate, and fighting after a layoff of 5 months and 9 days.
Srisaket Sor Rungvisai stopped Kwanthai Sithmorseng via RTD in the 3rd round. Rungvisai improves his record to 50-5-1 (43 KOs), while Sithmorseng adds a loss to his record at 50-8-1.
On June 9, 2019, a 34-year-old Kwanthai Sithmorseng (49-6-1, 26 KOs) and Jayson Mama met in the ring.
Sithmorseng came in to the fight on a 1-fight win streak with a 46% KO rate, and was fighting after a gap of 1 month.
Kwanthai Sithmorseng lost to Jayson Mama via TKO in the 3rd round, and adds an loss to his record at 49-7-1.
On May 5, 2018, a 33-year-old Kwanthai Sithmorseng (48-5-1, 26 KOs) and Wulan Tuolehazi met in the ring.
Sithmorseng came in to the fight on a 1-fight losing streak with a 48% KO rate, and was fighting after a gap of 5 months and 2 days.
Kwanthai Sithmorseng lost to Wulan Tuolehazi via TKO in the 4th round, and adds an loss to his record at 48-6-1.
On December 3, 2017, a 33-year-old Kwanthai Sithmorseng (48-4-1, 26 KOs) and Masahiro Sakamoto met in the ring in a flyweight bout.
Sithmorseng came in to the fight on a 1-fight win streak with a 49% KO rate, and was fighting after a gap of 6 months and 10 days.
Kwanthai Sithmorseng lost to Masahiro Sakamoto via KO in the 3rd round, and adds an loss to his record at 48-5-1.
On May 6, 2015, a 30-year-old Kwanthai Sithmorseng (47-3-1, 25 KOs) got a shot at the light-flyweight WBA title held by 28-year-old Japanese boxer Ryoichi Taguchi (21-2-1, 8 KOs).
Sithmorseng came in to the fight on a 3-fight win streak with a 49% KO rate, and was fighting after a gap of 3 months. Taguchi was on a 3-fight win streak with a 33% KO rate, and fighting after a layoff of 4 months and 6 days.
Ryoichi Taguchi stopped Kwanthai Sithmorseng via TKO in the 8th round of the 12-round world-title fight, and successfully defended his WBA light-flyweight title. Taguchi improves his record to 22-2-1 (9 KOs), while Sithmorseng adds a loss to his record at 47-4-1.
On August 8, 2014, a 29-year-old Kwanthai Sithmorseng (44-2-1, 23 KOs) and Stamp Kiatniwat met in the ring in a flyweight bout.
Sithmorseng came in to the fight on a 3-fight win streak with a 48% KO rate, and was fighting after a gap of 3 months and 7 days.
Kwanthai Sithmorseng lost to Stamp Kiatniwat via unanimous decision in the 12-round flyweight fight, and adds an loss to his record at 44-3-1.
On September 11, 2013, a 28-year-old Kwanthai Sithmorseng (41-1-1, 21 KOs) got a shot at the light-flyweight WBA title held by 24-year-old Japanese boxer Kazuto Ioka (12-0, 8 KOs).
Sithmorseng came in to the fight on a 12-fight win streak with a 48% KO rate, and was fighting after a gap of 2 months and 6 days. Ioka was on a 12-fight win streak with a 66% KO rate, and fighting after a layoff of 4 months and 3 days.
Kazuto Ioka stopped Kwanthai Sithmorseng via KO in the 7th round of the 12-round world-title fight, and successfully defended his WBA (Regular) light-flyweight title. Ioka improves his record to 13-0 (9 KOs), while Sithmorseng adds a loss to his record at 41-2-1.
On April 19, 2011, the 26-year-old WBA strawweight world champion, Kwanthai Sithmorseng (29-0-1, 16 KOs), faced Muhammad Rachman, in a title defense fight.
Sithmorseng came in to the fight on a 29-fight win streak with a 53% KO rate, and was fighting after a gap of 5 months and 14 days.
Kwanthai Sithmorseng was defending his strawweight WBA titles against Muhammad Rachman and lost via KO in the 9th round, and adds an loss to his record at 29-1-1.