Derek McInnes issued a warning that "we are now carrying a cutting edge" after Bristol City demolished Cardiff 4-2 in the npower Championship.

Martyn Woolford scored twice with Stephen Pearson and £1million striker Sam Baldock also on target as the Robins brought their total to eight goals from two games following the 4-1 thrashing of Crystal Palace in midweek.

While McInnes knows it is very early days in the league campaign, the Robins manager enthused about his free-scoring team. McInnes, who also named his other new front-man Steve Davies on the bench, said: "We are getting goals from the middle of the park, which we didn't do last season and now have some great options up front.

"With Sam and Steve on board, we have a lot of different strikers, who pose threats in various ways. All the clubs I have been at, who were successful, had good strength in depth when it came to strikers.

"It is very early days, but after last season I'm delighted to be challenging at the right end of the table even at this stage of the campaign. We will not get carried away because we know how quickly things can change, but all credit to the players for the work they have put in so far."

Pearson and Woolford netted first-half goals to put McInnes' men in control. Pearson swept home a low Albert Adomah cross from 12 yards on 32 minutes. And seconds before the interval Woolford burst on to Jon Stead's pass before sliding his shot past David Marshall.

Cardiff substitute Joe Mason headed them back into the game following Peter Whittingham's 57th minute corner. But Woolford hit his second on 70 minutes after a shot from former West Ham hot-shot Baldock came back off a post.

Heidar Helguson gave Cardiff fresh hope with a close range finish on 82 minutes, but Baldock crowned his debut with a clinical low shot to clinch the points.

Cardiff boss Malky Mackay said: "Without taking anything away from Bristol's performance, we conceded some bad goals. We gave the ball away in poor areas, which is not like us. We started the season defensively strong, but today we didn't keep to that standard.

"If you gift possession to good teams they are going to punish you. We will look at the DVD and identify where we could have done a lot better."