British archer Amy Oliver pulled off a stunning result to beat world number one Deepika Kumari in the first-round of the women's competition at Lord's.
Oliver, Team GB's last female medal hope after Naomi Folkard and Alison Williamson exited on Tuesday, was faced with a mountain to climb when technical problems in the ranking round left her placed 57th and paired with one of tournament favourites.
But while India's Kumari struggled to find her best form, Rotherham-born Oliver showed great nerve to secure a memorable 6-2 win over four sets.
Oliver, who stands 36 places below Kumari in the world rankings, drew first blood as, after the pair traded eights, she shot dead centre for a 10 with her second arrow. With the last three shots of the set all in the nine ring, Oliver moved into a 2-0 lead - much to the approval of the loud home crowd.
A pair of outer golds moved her into position to win the second set too, but with nine needed to clinch it Oliver erred and shot well wide for a four.
Unperturbed by that setback, she took 27 from her next three attempts, with an opening eight from Kumari effectively settling the set in Oliver's favour.
Kumari shot first in what proved to the be the final set and both archers began with eights.
The world number one shot successive nines but Oliver, sensing a huge victory, steadied her aim and reeled off successive maximums to progress to the last 32.