Szász, who won her first-ever Olympic medal with gold at last year's Games in Rio de Janeiro, overcame Man Wai Vivian Kong of Hong Kong 15-13 in the final at the Centro de Alto Rendimiento.

The 34-year-old Hungarian was made to work hard for her victory in both her final and semi-final.

Szász, a four-time World Championships medallist, had edged past South Korea's Shin A Lam 10-9 to book her place in the gold medal contest.

Shin, a silver medallist in the team event at London 2012, accounted for Italy's Alberta Santuccio in her semi-final.

It came after the South Korean fencer sent double Olympic gold medallist Tatiana Logunova of Russia crashing out at the last eight stage.

Bogdan Nikishin of Ukraine sealed his second Grand Prix victory as he won the men's event by ousting Marco Fichera of Italy in the final.

Nikishin, a World Championships team gold medallist in Moscow in 2015, emerged from a low-scoring gold medal bout on the right side of a 7-3 scoreline.

Fichera's second-place finish marked his best result at this level of competition.

The Ukrainian athlete reached the tournament's showpiece encounter as he beat Fichera's Italian team-mate Edoardo Munzone 13-7.

Fichera's progression to the final included a surprise 15-11 win over Park Kyoung-doo of South Korea in the last four.

Park had made the semi-finals after beating Italy's Paolo Pizzo, Olympic silver medallist and world champion in 2011, 15-14.