That 11-over card at the par 72 Sunningdale Golf Course was Delasin’s worst score since she turned pro last year and it pulled the Fil-Am shotmaker all the way down from a high joint seventh place to a forgettable second-to-last position among the 71 survivors.
She had a 223, 16 strokes behind Scot Catriona Matthew, who hung tough with a scrambling 72 for a 207 but found herself being chased by a slew of players, including the fancied Karrie Webb of Australia.
Lora Fairclough shot a 67 to join Mi Hyun Kim (71) and Janice Moodie (71) in second place at 208 while Webb had a 68 to be at 209.
Delasin, fresh from her successful title-retention campaign in last week’s Giant Eagle Classic, had looked forward to an explosive weekend after a second round 69 put her within five strokes off the lead. She even opened up with a birdie on the par 5 No. 1 to underscore her bid.
But after she parred the next two holes, things went awry for Delasin, who bogeyed the par 3 No. 4, double-bogeyed the next before dropping three more strokes, including another double-bogey at No. 9, for a badly-produced 41.
It was worse at the back.
Another double-bogey on the 13th and five bogeys, including three on the closing holes, put to naught whatever value her birdie on the 10th could give as Delasin limped with a 42 for that 83.
From joint seventh to 70th place in just one round, Delasin must indeed come up with a spectacular finish to at least salvage some measure of pride.