Daniel Lapin has suffered a mammoth upset defeat on his teammate Oleksandr Usyk’s undercard.The 6ft 6ins giant light-heavyweight was an unbeaten prospect, who carried an extensive amateur pedigree and promise in the pro ranks.Lapin was beaten in a monstrous upset on the Usyk undercardHe took on what was expected to be a routine victory against spirited Frenchman Benjamin Mendes Tani in a big stage on yet another undercard.This time it came on the preliminary bill of Usyk’s huge clash with Verhoeven in Egypt.Lapin was an overwhelming favourite and started off the brighter in the contest.But with his team and fans watching on ringside who were in Egypt to see Usyk, it turned to disaster.Lapin dropped three times in brutal KOLapin looked lacklustre but controlled the bout early on with his range.But Tani was seriously motivated and used an aggressive front-foot approach which helped him start to find the target.He was down on the scorecards but rallied in the fourth, and scored a brilliant breakthrough.It was a flash knockdown in close quarters but Lapin was on uneasy ground.He recovered but it was then a body shot, whipping into the midriff that crushed him to the ground for a second time.The Ukrainian bravely climbed to his feet again but was on borrowed time.View Tweet: https://t.co/FoiaUucafvAnd Tani was determined to get the fight over in the fourth stanza and let his hands go again.A thumping right hand crashed through the guard and into the face of Lapin, who crouched to a knee again.The referee quickly waved off the bout deciding he had seen enough with Lapin taking a real battering.The 28-year-old was victim of a monstrous upset and Tani celebrated with back flips.It was a personal milestone for Tani whose name will now be sent to the stratosphere by claiming the big scalp.For Lapin it is a bitter blow that sees him beaten for the first time in his career.Watch Boxing on DAZN*If you click a link in this boxout, we will earn affiliate revenueSign up to DAZN to access the definitive subscription for boxing fans.Upgrade to DAZN Ultimate from just £24.99/month, guaranteeing access to 185+ fights annually, a minimum of 12 pay-per-views at no extra cost, as well as every Lega Serie A match and other elite football access.Alternatively, DAZN Standard is just £15.99/month, with the caveat you will have to pay for pay-per-view events.Click here to sign up.He will now need to go back to the drawing board with team Usyk to try and recover and change his act if he is to reach what many destined for him to be world level.