Play is contested using the Modified Stableford Scoring system. The system offers eight points for a double-eagle, five points for an eagle and two points for a birdie. No points are handed out for par, and one point is deducted for each bogey with players losing three points for double-bogey or worse.
Laura Davies, who became the first woman to play in a European Tour event, struggled badly Friday to minus-12 points to finish next to last with minus-13 points.
The 20-time winner on the LPGA Tour stumbled to nine bogeys and one double- bogey during the second round. She opened with double-bogey on the par-four second.
Davies lost another point when she bogeyed the sixth, then faltered to five straight bogeys from the eighth to fall to minus-eight for the round. She posted bogeys on the 15th and 16th, before closing with a bogey at the last.
'You never say never, but no at this stage if I was invited to play at another event,' Davies said. 'I'd rather have had a go and not made the cut and finished poorly than just sit back and turn the invitation down because I would always have been wondering. Now I know.'
Paul Casey, the 2003 champion, tied for the most points of the day as he collected 19 points to move into a tie for third with 23 points. He is joined there by Thomas Levet, a two-time winner on the European Tour, who posted 14 points in the second round.
Michael Campbell picked up 11 points for the second straight day and shares fifth place with 22 points with Peter O'Malley (10 points). Scott Gardiner gathered 14 points Friday and is one point back at 21.
Webster began his day four points behind O'Hern and fell further back with a bogey at the first. He fought back hard though. He drained a birdie at the par-4 fifth and came right back with another birdie on No. 6.
The Englishman converted a birdie try at the seventh to make it three in a row. He notched a birdie at No. 9 to collect his sixth and seventh points of the front nine.
Webster birdied the par-4 11th and the par-three 13th to move to 25 points. He capped his round with a birdie at the par-5 16th to garner first place.
O'Hern got his round going with a pair of birdies on par-4s, Nos. 3 and 5, that moved him to 22 points. The left hander stumbled to bogeys at the seventh and ninth to slide back to 20 points.
He took care of the par-5s on the backside with birdies on both, the 12th and 16th. He birdied the par-4 18th for the second straight day to take solo second.
Bradley Hughes matched Casey's 19 points to leap into a share of eighth place. He is joined at 19 points by Joakim Haeggman, who posted seven points in the second round. Australian amateur Nick Flanagan and Peter Hedblom are one point back with 18.
The cut line fell at nine points with 82 players advancing to the final two rounds.