Vibe-Hastrup was at 8-under 130 after two rounds. He was followed by Alastair Forsyth (65) and Steven O'Hara (66), both of Scotland, and Brett Rumford (66) of Australia. Ten players were at 132, including 2005 U.S. Open champion Michael Campbell (66).
Among those missing the cut was Retief Goosen, who shot a 73 for a 143.
Colin Montgomerie put himself in contention with a 64 and is four strokes behind. Montgomerie, who shot 70 on Thursday and bemoaned his putting, was not much happier Friday.
'I got my game back together. Got half of it right,' he said. 'But putting is terrible.'
Vibe-Hastrup played on the tour for four years but lost his card in 2005 and regained it on the Challenge Tour last year. His big shot Friday came on the 529-yard 16th holes, where he was left with a 1 foot putt for an eagle.
'I drove the ball well,' he said. 'My irons were very good and on 16 I hit the perfect 3-wood with a slight draw.'
Editor's note: GOLF CHANNEL will have coverage of all four rounds beginning at 10:00 a.m. ET on the first two days and 9:00 a.m. on the weekend.