Whites praise but Swansea City boss Steve Cooper unsure about Leeds United's Premier League credentials

United dealt a blow to Swansea's Championship play-offs hopes with Sunday's last-gasp 1-0 victory at the Liberty Stadium in which former Swans star Pablo Hernandez bagged an 89th-minute winner.

The defeat left Cooper's side seventh, one point behind Welsh rivals Cardiff City, with Hernandez's strike putting Leeds three points clear at the top of the division and re-establishing a six-point cushion in the division's automatic promotion spots with three games left.

Even if second-placed West Brom and third-placed Brentford take maximum points from their last three games, four points from United's final three fixtures would guarantee automatic promotion and Premier League football for the first time since 2004.

Cooper admitted any game against the Whites was now guaranteed to be a tough assignment but the Swans boss said he was unsure about how Leeds would fare in the Premier League - or if promotion would be swiftly wrapped up before the end of the campaign.

Asked if he expected Leeds to now seal promotion quickly and how the Whites might fare in the Premier League, Cooper said: "I haven't really thought about it to be honest.

"They're obviously a good team, they have a clear way of playing.

"You have to match them in what they do and be ready for it because they're good at it.

"Whether it's enough to get them out of this league and then compete in the Premier League, I'm not too sure, you are better asking the Leeds staff rather than me.

"All I know is when you play them now it's a really tough game .

"We are down at the moment but it was a good game.

"We were out there and trying to win and obviously we have come on the wrong side of it.

Cooper added: "We focus on ourselves to be honest.

"Leeds are obviously a good team and they have a clear way of playing but we very much want to take our game into whoever we are playing, whether we are playing top of the league or bottom of the league.

"Our focus is just on ourselves."