By Marcus ChhanFollow @@MarcusChhan
In what was the co-main event of the evening at the Singapore Indoor Stadium, the American grappler finished the middleweight bout the stronger of the two to claim the win by unanimous decision over the Dutchman.
The fight had been billed as the classic battle between grappler - Larson has 25 submission wins under his name - and striker - Manhoef has 25 knockout wins on his record - but in the early stages it was largely forgettable.
Both men showed each others' different skill sets tremendous respect but it did not take long for the Singapore crowd to voice their disapproval at the tentative start.
Manhoef rocked Larson later in the round with his signature kicks. However, Larson came back strongly towards the end of the second round and had the Dutchman in a tight armbar before the latter was saved by the bell.
In the third round Larson took the fight completely to the ground where Manhoef's fearsome striking ability could not be unleashed. From there, the American used his superior grappling to allow him to relentlessly pound his opponent for the win by unanimous decision.
"He hits like a train. I've never been hit harder in my life," Larson said in his ringside interview.
The other co-main event saw Mixed Martial Arts (MMA) Japanese legend Shinya Aoki add a new chapter to his storied career by winning the One FC Lightweight belt from compatriot Kotetsu Boku.
Aoki totally dominated the champion with Boku eventually tapping out when the Evolve MMA fighter landed a rear naked choke at 4:04 minutes of round two.
Another highlight at Kings & Champions came when Hong Kong's Eddie "The Magician" Ng lived up to his nickname by pulling out a stunning victory from the One FC hat against Frenchman Arnaud Lepont.
Muay Fit's Lepont certainly had the better of his encounter with the much younger Ng and was clearly distraught that he allowed himself to be submitted by an armbar at 4:45 minutes of round two.
Lepont sportingly lifted the Evolve MMA fighter on his shoulders when he was announced as the winner.
It was a good night overall for Evolve as earlier in the evening, Leandro Issa defeated Yusup Saadulaev while Alex Silva beat Rene Catalan by armbar submission.
Meanwhile, in the Bantamweight Grand Prix semi-finals Filipino Kevin Belingon scored a nice victory for Team Lakay with a polished performance against Australian Thanh Vu. Belingon looked sharp from the opening bell and his lightning speed and Wushu kicks did not allow his opponent to capitalise on his reach advantage.
A head kick followed by a strong left hand then sent Vu to the canvas where Belingon fired a barrage of punches and kicks before the referee stepped in and stopped the fight at 1:00 minutes of round two.
The Australian was not happy the fight had been stopped as he clearly felt he could have continued but Belingon has a different view.
"I hit him hard. It was a good decision to stop the fight," Belingon said ringside.
Belingon will now meet Masakatsu Ueda in Bantamweight Grand Prix final after he dispatched of Jens Pulver via d'arce submission at 3:52 minutes of round two.
In other results, Bashir Ahmad won on his One FC debut over Shannon Wiratchai, Jake Butler outclassed Swain Cangco, and Malaysian Chen Yun Ting humbled hometown boy Ronald Low.
Official results for One FC Kings & Champions
Aoki defeats Boku by submission via rear naked choke at 4:04 minutes of round two.
Larson defeats Manhoef by unanimous decision at 5:00 minutes of round three.
Masakatsu Ueda defeats Jens Pulver by d'arce submission at 3:52 minutes of round two.
Belingon defeats Vu by referee stoppage due to strikes at 1:00 minutes of round two.
Ng defeats Lepont by armbar submission at 4:45 minutes of round two.
Issa defeats Saadulaev by decision at 5:00 minutes of round three.
Silva defeats Catalan by armbar submission at 4:34 minutes of round one.
Ahmad defeats Wiratchai by decision at 5:00 minutes of round three.
Butler defeats Cangco by submission at 2:52 minutes of round one.
Chen defeats Low by referee stoppage due to strikes at 3:58 minutes of round one.