[9][10] Adegbuyi won via TKO early in the first round after Ahmadi seemingly broke his left arm upon impact with Benny’s upper leg as he landed a middle kick on Jafar.

[11][12] After winning the title of the SUPERKOMBAT World Grand Prix III 2012 tournament (in which he defeated the highly rated and experienced Croat Mladen Brestovac), he was scheduled to fight Alexey Ignashov in the tournament on November 10 in Craiova, Romania at the SUPERKOMBAT World Grand Prix 2012 Final Elimination.

[13][14] However, Ignashov could not fight due to injury and was replaced by the previous year's SUPERKOMBAT World Grand Prix Champion, Sergei Lascenko.

[16] Despite entering as the tournament favourite, Adegbuyi was exposed by eventual champion Pavel Zhuravlev when the Ukrainian KOed him in first round in the semi-finals at the SUPERKOMBAT World Grand Prix 2012 Final on December 22 in Bucharest.

[17][18][19] He defeated Mohamed Belazaar via first-round TKO due to an injury a SUPERKOMBAT World Grand Prix I 2013 in Oradea, Romania on April 6.

[20][21] He rematched Jairzinho Rozenstruik at SUPERKOMBAT World Grand Prix II 2013 in Craiova, Romania on May 18, and won by unanimous decision.

[25][26] He defeat Reamon Welboren by unanimous decision at SUPERKOMBAT World Grand Prix III 2013 in Botoșani, Romania on September 28.

[27][28] He rematched Pavel Zhuravlev at the SUPERKOMBAT World Grand Prix 2013 Final in Galați, Romania on December 21, 2013, winning by third-round KO.

[31] Prior to the fight, Adegbuyi and Andrei Stoica spent time as sparring partners of Alexander Gustafsson at the Allstars Training Center in Stockholm, Sweden.

[39] Adegbuyi beat Hesdy Gerges in November at Glory 18: Oklahoma on Spike, and became the mandatory challenger for a shot at the heavyweight title.

Adegbuyi shocked the fans in France during the first round, dominating the champion with excellent power punches and a great jab.

He showed no fear whatsoever for Verhoeven and used his advantage in reach to perfection, even rocking the Dutchman with one good shot.

His corner urged him on to keep moving, taking advantage of Adegbuyi's relative inexperience and evening's tendency to rely on his boxing too much.

[45] On October 9, 2015, Benjamin Adegbuyi defeated Jahfarr Wilnis by split decision and Mladen Brestovac by TKO to earn the Ramon Dekkers memorial trophy and get a second crack at GLORY heavyweight champion Rico Verhoeven.

[47] In one of the best heavyweight kickboxing bouts of 2015, Adegbuyi pulled out a split-decision victory over Jahfarr Wilnis to claim the tournament finals championship.

The punch repeatedly slowed Wilnis down and apparently did enough to convince two judges that Adegbuyi deserved the third and decisive round, winning the heavyweight brawl in an impressive fight.

[48] Adegbuyi lost by first-round KO in a rematch with Rico Verhoeven for the heavyweight title in the main event of Glory 26: Amsterdam on December 4, 2015.

[49] He lost a shocking split-decision to Guto Inocente in the main event of Glory 43: New York, after appearing to dominate two of the three rounds they had fought.

Unexpectedly, the judges saw the fight very differently from the majority of viewers, leaving Adegbuyi speechless at the official announcement and venting fury on Twitter shortly afterwards.

[50][51] Adegbuyi participated in the 2018 Glory four man heavyweight tournament, alongside D'Angelo Marshall, Guto Inocente and Junior Tafa.

[67] The bout was subsequently cancelled due to the COVID-19 pandemic,[68] and the fight was rescheduled for Glory 76 on November 7,[69] but fell through again, as Badr Hari contracted COVID-19.

At the beginning of the final round, Hari again tried to put the pressure on his opponent but he was caught by an Adegbuyi right hand thrown from a southpaw stance.

[81] Adegbuyi has been training in his native Romania for the most part of his career, currently still in the capital Bucharest but also at Superpro Team in Sibiu, Transylvania for boxing.

[82] Since 2015, Adegbuyi has been training mainly in Zevenbergen, Netherlands under Dennis Krauweel at Superpro Sportcenter,[83] with fellow kickboxers Rico Verhoeven, Dexter Suisse and Max van Gelder.

[84] In 2015, Adegbuyi and Tyson Fury trained together in Manchester, England, in preparation for their fights at the Glory 24: Denver tournament and against Wladimir Klitschko respectively.

[101] In May 2013, Adegbuyi was found not guilty by the Supreme Court of Romania in the Yax nightclub brawl where a man was severely beaten.