Rovers travel to Manchester City tonight lying 13th in the Barclays Premier League table but just three points away from the relegation zone.
Sam Allardyce: "It's a big worry because I didn't think it would be this close from our point of view, based on our performances over the last 20 games.
"But unfortunately we haven't scored enough goals - there are 10 games this year that we haven't scored in. That shows you our problem really.
"We have not done so bad really, clean sheet-wise - we have got four in the last 10 (league) games having had a particularly poor run in the first 10.
"We seem to have put that right a little bit but not got enough goals to clinch more victories, so instead of winning five in the last 10, we have only won two and drawn five, and that's the massive difference that you then get in the league situation.
"We must put that right. We haven't won in eight and it's very close to being very good, but unfortunately draws are not enough.
"We need to get some wins and we need to get them very quickly.
"That is going to be very difficult at Manchester City but not impossible, so a positive result is what we will look for."