Perfectly living-up to her nickname of the "headhunter",  Jones struck four decisive three-pointers in the second and third rounds to overcome an early deficit and earn a 14-4 victory over Spain's Eva Calvo Gomez to the delight of a partisan home crowd. 

Fighting in her adopted home city, the Welsh star had the toughest of opening tests against Kimia Alizadeh Zenoorin, the Iranian who narrowly beat her at the quarter-final stage at the World Championships in Chelyabinsk in May.

Since that setback, Jones has responded as only a champion can, winning gold at the Baku 2015 European Games and at last month's Grand Prix in Samsun to emerge as the leading contender in a tough division.

With the home fans roaring her on, the top seed maintained her composure and proved too strong in defence for her Iranian opponent this time.

That was followed by further victories over Kim Sohee of South Korea and Sweden's fourth-ranked Nikita Glasnovic to set up a final against her Spanish rival.

The European pair have clashed numerous times on the Grand Prix circuit, with Jones also beating her in last year's series final in Queretaro.

It was Gomez who started the stronger, however, taking a 4-0 lead after a scoreless opening as Jones struggled for rhythm.

It clicked into place suddenly and, in a remarkable 15-second spell, she scored first with a flick to the faceguard before a superb counter-kick for a second swifly followed by a decisive strike for a third.

Gomez was reduced to speculative spinning kicks thereafter, as Jones scored with a fourth head-shot in the final round to confirm her victory.

It was hoped Jones' housemate, world champion Bianca Walkden, could follow suit as she won a nail-biting over 67kg semi-final due to registering more impacts after a scoreless golden-point round against top-seeded Serbian Milica Mandic.

After expanding so much energy, and limping off the mat with an apparent injury, it was always going to be a tough ask for her to respond in the final against Zheng Shuyin of China, the under 73kg world silver medallist.

In a typically gutsy effort, the Briton, who has battled back this year having recovered from two career-threatening cruciate ligament injuries, never gave in, fighting back from 1-0 down to set-up another golden point finale.

It was the Chinese player who defied the positive energy from the crowd for Walkden to eventually strike with a head-shot to secure victory in thrilling fashion.

There was more Spanish disappointment in the final fight of the evening when Jesus Tortosa Cabrera was beaten by Kazakhstan's Nursultan Mamayev in the under 58kg competition, another bout decided by golden point.

Unlike Zheng, however, the Asian Games silver medallist required just seconds of the overtime period to wrap up the fight, driving forward to land the decisive blow.

Action is due to conclude here with a third evening of finals tomorrow, with competition taking place in the men's under 80 and women's under 49kg divisions.

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