Wolverhampton Wanderers have been frustrated in the first 45 minutes of their League One opener by a determined Preston North End side.
Simon Grayson's team started the match brightly, with Lee Holmes posing a potent threat down the left flank.
Bakary Sako then drilled a strike towards goal at the other end, with his low effort needing a strong save from Preston goalkeeper Declan Rudd.
Wolves lost central defender Richard Stearman to an early injury, with George Elokobi quickly brought off the bench to take his place.
The sides then had a clear-cut chance each to score just before the break, with Wolves threatening first through Leigh Griffiths.
The forward had a fierce volley cleared off the line by a last-ditch header from Paul Huntingdon, while at the other Holmes saw a dangerous corner cleared to safety.
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