The 19-year-old Blomqvist, who won her last tournament in Hungary two weeks ago, eagled the par-5 first and ninth at Sunningdale and collected six more birdies in a 10-under round. Then she revealed it was her third 62 of the season.
Her round put her one stroke behind overnight leader Karen Stupples at 8-under. But Stupples lost the lead when she double bogeyed the par-3 fifth and Americans Cristie Kerr and Heather Bowie took over at 10-under. Kerr had played 13 and Bowie had just reached the turn while Stupples was 9 under after five.
Annika Sorenstam, chasing her eighth major and second of the season, started with a double-bogey seven at the first and slid to 3 under. She drove into the rough, and she eventually three-putted the hole. But the Swede recovered with birdies at the next two and also at the ninth and went to the turn at 6 under, four off the lead.
Blomqvist, who says one of her goals is to be Sorenstam's playing partner in the final round of a tournament, said she shot a 9-under 62 at the par-71 Ladies Central European Open at Old Lake Golf Club just outside Budapest and gained an identical score in a tournament in South Africa four months ago.
Saturday's score, which gave her an 8-under total of 208, was one better than the previous best for a major owned by Patty Sheehan (1984 LPGA Championship), Mary-Beth Zimmerman (1997 Dinah Shore), Helen Alfredsson (1994 U.S. Women's Open) and Meg Mallon (1999 LPGA Championship). It also beat the course and championship record 63 set by Australia's Karrie Webb seven years ago before the tournament became a major.
The 62 came a day after Blomqvist just made the cut.
She followed her opening round 68 with a 6-over 78, which she put down to nerves.
'Yesterday, it was all wrong and I couldn't concentrate,' she said. 'I made 40 putts. I was nervous that I was not going to make the cut.
'Today was different. I had a good feeling and I was happy that I made the cut,' said Blomqvist who had reeled off a series of six putts in the 15-20 foot range and also chipped in from 60 feet at the 10th.
'I hit a lot of long putts today,' she said. 'Yesterday my mind wasn't clear. Today it was totally different.'
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