As a mixed martial artist from Thailand, Kongsrichai has distinguished himself from other Thai fighters with his extensive wrestling background that makes up most of his fighting style.
Kritsada Kongsrichai returned at the 2013 SEA Games to compete in Greco-Roman wrestling, where he finished in third place to win the bronze medal.
He made it to the finals of the men's 60 kg Greco-Roman tournament, losing to Angana Jandog Margarito Jr. of the Philippines to win the silver medal.
On 23 August 2014, Kritsada Kongsrichai made his debut at Full Metal Dojo 2: Protect Your Neck, where he lost to Kichong Tran by second-round submission via rear-naked choke.
He would pick up his first professional victory on 22 November 2014 at Full Metal Dojo 3: No Sleep 'Til Bangkok with a first-round submission of Manachai Promsawad via rear-naked choke.
On 22 August 2015, he defeated Detchadin Sorsirisuphathin by TKO at Full Metal Dojo 6: For Those About to Rock... to capture the vacant FMD Bantamweight Championship.
Kongsrichai would then defeat Pakorn Isarat by submission via rear-naked choke in the first round at Full Metal Dojo 10: To Live and Die in Bangkok on 19 March 2016.
[7] On 11 March 2017, Kongsrichai faced Adrian Mattheis at ONE Championship: Warrior Kingdom, where he won via first-round TKO after dominating with his wrestling-based grappling.
[11] After over a year away from mixed martial arts action, Kongsrichai was scheduled to return to face Kosuke Terashima at DEEP 94 Impact on 1 March 2020.
[13] Kongsrichai was scheduled to return to mixed martial arts against John Shink at Fairtex Fight: Descendants of the Empire II, to be held in Lumpinee Stadium, on 12 March 2022.