Pablo Larrazabal overcame a lengthy rain delay to shoot an 8-under 64 to take the clubhouse lead in the opening round of the Austrian Open on Wednesday.
The Spaniard hit four birdies and an eagle to sit at 6 under after 12 holes when play was suspended for 3 hours, 40 minutes. He then added two more birdies to equal the course record.
Play was then suspended for the day because of darkness, with Thorbjorn Olesen of Denmark closing in on Larrazabal at 7 under after 14 holes.
Thomas Levet of France and Wil Besseling of the Netherlands were 6 under when bad light ended play.
Scotland's Alistair Forsyth and England's Oliver Wilson hit 68s, while defending champion Kenneth Ferrie of England was par after 14 holes.
Former top-ranked tennis player Yevgeny Kafelnikov, appearing in his second European Tour event after the 2008 Russian Open, shot a 75 to outscore two former champions.
Jose Manuel Lara of Spain, the 2010 champion, shot a 78 and 2006 winner Markus Brier of Austria hit a 76.