Audi's Mike Rockenfeller has topped a pulsating wet-dry DTM qualifying for race two at the Hockenheimring after narrowly beating team mate Miguel Molina.

Rain returned to the Hockenheim circuit for the morning running as the earlier warm up session had already taken place under sodden conditions.

Conditions improved though for qualifying but the track still wasn't quite dry enough for slick tyres at the beginning of the session.

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Mercedes' Paul di Resta was the first to roll the dice on the slick Hankook rubber and - for the time being - it was a decision that paid off as the 2011 DTM champion grabbed the initiative by a healthy margin.

Inevitably, the Scot's pace was the catalyst in the rest of the field moving to the dry tyre as almost every driver set a provisional pole-position lap at each attempt on the rapidly improving circuit.

As the conditions levelled out, Audi's Mattias Ekstrom looked to likely candidate to claim pole thanks to a brace of quick and precise laps elevated the Abt driver to the top with a minute to go.

Rockenfeller, however, had other plans as he dramatically ousted his team mate from the top spot after the chequered flag fell.

The 2013 champion faced an agonising wait, though, as Molina - who crossed the line after Rockenfeller - only missed pole by three-hundredths of a second.

Ekstrom was forced to settle for third as Audi locked out the front three positions.

Team RMG's Marco Wittmann atoned for his poor qualifying performance in yesterday's session as the reigning champion lines up alongside Ekstrom on the second row of the grid.

Edoardo Mortara, Martin Tomczyk and Antonio Felix da Costa all improved late on to complete the top seven positions while Mercedes' Gary Paffett - who like Di Resta spent much of the session at the top of times - qualified eighth.

Team RMG's Maxime Martin was ninth aboard his BMW M4 while one of the many race one casualties, Robert Wickens, managed to break into the top-ten for the first time this weekend.

Such was the rate of track evolution, Di Resta eventually ended the session down in twelfth. The HWA driver's progress was seemingly hindered when he was held up by Pascal Wehrlein at the last corner when on a hot lap.

In a complete reversal of fortunes from yesterday, race one winner Jamie Green will have it all to do later this afternoon in 19th position.