The first half of the FA Cup quarter-final between Millwall and Blackburn Rovers has been a niggly and scrappy affair.
David Forde, Jason Lowe and Marcus Olsson have all been shown yellow cards, while shots at goal have been rare.
Liam Trotter was the first to try his luck on 22 minutes, but his long-range effort drifted harmlessly wide.
David Bentley then fired a free kick straight into the wall, before Alan Dunne also tried and failed from outside the penalty area.
Blackburn defender Adam Henley suffered a suspected hamstring injury midway through the first half and had to be replaced by Bradley Orr.
The game's only real chance came on 40 minutes, when Adam Smith stood up a cross to the far post for Robert Hulse, who saw his bullet header rebound to safety off the inside of the post.
