[8] In 2018, he opened his own gym (Stoica Brothers Fight Academy), and since then he has been training there also under the guidance of the boxing coach Andrei Mircea.
[10] On February 25, Stoica faced Redouan Cairo in a rematch at the SUPERKOMBAT World Grand Prix I 2012 in Podgorica, Montenegro.
[11][12] He next faced Toni Milanović at the SUPERKOMBAT World Grand Prix IV 2012 on October 20 in Arad, Romania and defeated the Croatian via split decision.
[19] He lost to Agron Preteni via unanimous decision in a non-tournament bout at the K-1 World Grand Prix FINAL in Zagreb, Croatia on March 15, 2013.
This allowed Ilunga to get underneath it and come back with a huge counter right hand that floored and took Stoica out, who didn't have his feet beneath him to answer the ten count.
[32][33][34] Prior to the fight, he and Benjamin Adegbuyi spent time as sparring partners of Alexander Gustafsson at the Allstars Training Center in Stockholm, Sweden.
[39] Stoica had his second title defense against Moises Baute on October 25, 2014, at SUPERKOMBAT World Grand Prix 2014 Final Elimination,[40] where he won via KO in the third round.
[41] Stoica faced Marcello Adriaansz on March 7, 2015, at SUPERKOMBAT World Grand Prix I 2015 and won via unanimous decision.
[42] Stoica fought Thomas Alizier on May 23, 2015, in his hometown, at SUPERKOMBAT World Grand Prix II 2015, winning the bout by knockout the second round.
[43] Stoica faced Abdarhmane Coulibaly on July 19, 2015, at SUPERKOMBAT World Grand Prix III 2015 in another non-title bout.
[44] On August 1, 2015, at SUPERKOMBAT World Grand Prix IV 2015 Stoica defended his title by defeating Fred Sikking by first-round KO.
He recovered to make it to the end of the bout, but Stoica took home a clear unanimous decision winning his eight consecutive fight.
[49] Stoica managed to halt the two fight losing skid with a first round low kick knockout of Antonio Souza.
[56] Going back to his native Romania, Stoica fought twice under the banner of Dynamite Fighting Show, defeating Sazan Memedi by decision and Luis Morais by a first-round knockout.
[58] On March 9, 2019, Andrei Stoica made his ONE debut against former SUPERKOMBAT World Grand Prix Champion Tarik Khbabez at ONE Championship: Reign of Valor.
[60] On December 6, 2019, Andrei Stoica next faced Anderson Silva at ONE Championship: Mark Of Greatness in a match that had world title implications.
[61] After the fight, Stoica expressed interest in challenging Roman Kryklia for the ONE Kickboxing Light Heavyweight World Championship.
[66] Stoica was scheduled to fight the reigning ONE Kickboxing Light Heavyweight champion Roman Kryklia at ONE Championship: Collision Course.
[68] Kryklia and the designated mandatory challenger Stoica were supposed to meet in 2021, but in December 2020 the Ukrainian did not face Murat Aygün.