O’Keefe and Martin Sampedro, the last two players standing from an original starting field of 144 from over 30 countries, were swiftly into their stride during a delightful morning on the Moray coast.
Over the opening six holes, O’Keefe, the 20-year-old world number eight, and Martin Sampedro traded six birdies in an early period of thrust and counterthrust that set the tone for a terrific encounter.
Both players demonstrated class, control and craft as they conjured a total of ten birdies, 26 pars and no bogeys in a fascinating morning session which finished all-square.
Martin Sampedro was never behind but also never more than one hole ahead while events on the 16th underlined the quality of the tussle.
Leading by a hole at that point, Martin Sampedro’s escape from a greenside bunker was sublime as she splashed out to within two feet of the hole.
O’Keefe responded in style, however, and rolled in a birdie putt from 15 feet with total authority to haul herself back to all-square.
Ahead of the afternoon’s second round, the finalists were piped on to the first tee and Martin Sampedro wasted no time in hitting the high notes herself as a deft dink from the side of the green grazed the hole.
O’Keefe stumbled to the first bogey of the day and the Spaniard was one-up. Her lead was fleeting, however, and having taken three to extricate herself from a bunker on the 21st – it would result in her only bogey of the day - O’Keefe restored parity.
The match remained intriguingly poised but Martin Sampedro made a telling advance when she chipped in for a brilliant birdie on the 24th and followed it up with a birdie putt of 15 feet on the next to move into a two-hole lead.