Jonny Howson believes Leeds have plenty of their own players to cause Cardiff problems when the two sides clash at Eland Road on Monday.
Leeds face arguably their toughest test so far this season against Dave Jones' promotion favourites, with the likes of Craig Bellamy, Peter Whittingham and Jay Bothroyd already making a big impression as the Welsh side have risen to second in the Championship.
Howson said: "It might be the toughest on paper, but on the pitch anything can happen.
"Their squad contains some big names and we know the threats they have, but we will concentrate on ourselves.
"It doesn't matter who they have because we can cause problems for any team and we've shown that.
"We showed that in big games last season. We have good attacking players and we have players who can come off the bench as well. It will be a good test, but it's one we're looking forward to."