Great Britain's Heather Fell won the silver medal at the Modern Pentathlon World Cup final in Chengdu to keep her Olympic hopes alive.
Fell won the silver medal after a superb performance in the closing run/shoot event.
The result means Fell is likely to achieve the qualifying standard via the Olympic ranking list, leaving Pentathlon GB to decide between four eligible athletes - Mhairi Spence, Freyja Prentice and Samantha Murray had already achieved the mark - for the two women's places available.
Fell had previously conceded defeat in her Games bid, saying she was "gutted" to be out of the frame after finishing 15th at the World Championships, where Spence won gold and Murray took bronze.
But the team is due to be announced on June 8 and performance director Jan Bartu said today: "It looks like we'll have four women on the qualifying list now and they have all done a great job to be there.
"We now need to keep the momentum going for the next two-and-a-half months.
"Heather had a smashing combined event today - she took a high-quality tactical approach and it was a well deserved second place."
Jamie Cooke, Sam Weale and Nick Woodbridge are battling for the two men's places on the GB team and will do battle in tomorrow's final in China.
Fell was 10th going into today's last event but produced the third-fastest time - 11 minutes 55.37 seconds - to jump to second place.
Her points total of 5,248 left her 64 behind the gold medallist, Lithuania's Laura Asadauskaite, who had all but wrapped up the title prior to the run/shoot and could afford a 16th-placed finish in the final discipline.
Ireland's Natalya Coyle beat her closest rivals for Olympic qualification with a 21st-placed finish, raising hopes she could also win a place in London this summer.
Coyle must wait on June 1's official announcement of the final Olympic rankings but Pentathlon Ireland wrote on their official Twitter feed afterwards: "With some unofficial calculations we believe after finishing 21st today £pentawcf that @Natalyacoyle has qualified for the London Olympics!"
Brazil's Yane Marques edged home in a tight battle for bronze today, eight points ahead of Germany's Annika Schleu and Pole Sylvia Gawlikowska with Yang Soo-jin only four points further back for South Korea.
