Frenchman Alexander Levy set a course record and opened up a six-shot lead before fading light shortened the second round of the European Open on Friday.
Levy will have to complete his round on the ninth hole on Saturday. Half the field will go out early Saturday for the second round, before the third round can start. Morning fog delayed start of play on both days so far.
Levy shot a 9-under in the morning for a course-record 62 as he completed the first round and was at 17-under when play was halted in the evening.
He made 17 birdies in 35 holes to open up a commanding lead over German Martin Kaymer, who also has one hole to play.
Robert Karlsson of Sweden and Englishman Ross Fisher, his playing partner, were also at 11-under — with three holes left to complete.
Levy has missed action with a wrist injury this summer but has been in good form since his return in early September. He finished in a tie for seventh at last week's Italian Open and is seeking his third European Tour title and first since the 2014 Portugal Masters.