Viktor Postol caused an upset at the StubHub Center in California as the Ukrainian KO’d Lucas Matthysse in the tenth round.
Postol, 31, used superior tactics throughout the bout to keep the big-hitting Matthysse at bay to claim the vacant WBC super lightweight title in the process.
Barring an onslaught from Matthysse between rounds six and seven, Postol had the Argentinian under his spell before breaking him down and taking him out.
Matthysse was caught with a huge shot in the tenth, from which he took a knee, but as Jack Reiss counted it was more apparent that ‘The Machine’ wasn’t getting up.
Wild celebrations followed as Postol kept his unbeaten run going, although questions will be asked about Matthysse from the seventh session onwards as he lost out on a world title for the second time.
In a career step-up, Antonio Orozco rose to the challenge to out-point three-weight world champion Humberto Soto over ten rounds.
The undefeated super lightweight overcame a slow start to take most of the last seven rounds to see out a 98-91, 97-92 twice triumph.
Julian Ramirez engaged with the more experienced Hugo Partida for the duration of their bout safe in the knowledge that the featherweight was putting the rounds in the bank.
The 22 year-old scored the best win of his career so far, a fifteenth since entering the paid ranks, following scores of 100-90 twice and 99-91.
In a tougher than expected encounter, Mercito ‘No Mercy’ Gesta grabbed win number 29 after initially being floored in the second round by late replacement Miguel Mendoza. Gesta picked himself up to establish himself in the fight and see out a 97-92 twice, 98-93 win on the scorecards.
D’Mitrius Ballard claimed his tenth professional victory with a unanimous victory against Juan Carlos Rojas over six rounds, whilst super featherweight Kevin Rivers Jr suffered a shock first loss following a majority defeat to Alejandro Ochoa.
Rivers was put down more than once early in the fight and struggled to claw back the points.
At super lightweight, Argentinian Marcelino Lopez recorded a 32nd career triumph by knocking out David Rodela in the third session, whilst Nick Arce improved to 5-0 with a four-round knockout of Juan Hernandez.