Chalamdam started his fighting career under the name Kasikorn. On September 27, 2020, he challenged for the Channel 7 Stadium 105 lbs title against Yodbuangam Diamond98. He lost the fight by unanimous decision which led his camp owner to publicly criticize the judging.[3]
In 2021 Chalamdam took part in the 21st annual Tiger Cement Tournament.[4] Chalamdam reached the final of the tournament happening on June 5, 2022, where he defeated Wutikorn Suanathankhiri by unanimous decision to take home the 600,000 baht cash prize.[5]
On September 18, 2022, Chalamdam faced Patakphet VK.KhaoYai for the vacant Channel 7 118 lbs title. Chalamdam won the fight by unanimous decision.[6] The judges decision was met with a backlash from various observers including Chalamdam's opponent gym headman who took the decision to not send his fighters compete on the Channel 7 Stadium promotion anymore.[7]
Chalamdam faced Phetsommai Sor.Sommai on February 14, 2023, in the Uthai Thani province. He won the fight by decision, taking his winning streak to twelve in a row.[8] Following this success Chalamdam became the #1 ranked 118 lbs Muay Thai fighter in the world according to both the WBC Muay Thai and the WMO.[9][10] On March 30 it was revealed that Chalamdam was among the three fighters shortlisted for the 2022 Sports Writers Association of Thailand Fighter of the Year award.[11]
Chalamdam was scheduled to face Singdam Kafefocus on May 28, 2023, for the vacant Rajadamnern Stadium 122 lbs title.[12] He won the fight by technical knockout in the fourth round. Following this success he was ranked as a top ten pound-for-pound fighter by the WMO.[13]
^"WMO Rankings Pound-for-Pound". wmomuaythai.org. Archived from the original on 18 June 2023. Retrieved 18 June 2023.{{cite web}}: CS1 maint: bot: original URL status unknown (link)