Kal Yafai has lost his WBA super-flyweight crown to Roman 'Chocolatito' Gonzalez after being knocked out in the ninth round.
Britain's longest-reigning world champion failed in his sixth defence of the title, falling to a crushing right from the Nicaraguan.
The 30-year-old from Birmingham had targeted a major fight having outpointed Norbelto Jimenez in June and had said he was "honoured" to be fighting his idol Gonzalez, the former four-weight world champion.
Earlier, Wales' Jay Harris failed to successfully challenge Julio Cesar Martinez for the WBC flyweight title, losing by unanimous decision in a gripping fight.