The Black Cats are bottom of the Premier League table after two defeats

Sunderland have been dealt another blow after their main club sponsor made them odds-on favourites for relegation from the Premier League.

Dafabet were unveiled as the club's principal partner in June and their name is on the front of both the home and away shirts.

However, their support does not extend to their online betting markets.

Sunderland's Steven Fletcher (left) and Danny Graham get ready to kick-off during their 3-1 defeat by Norwich

Black Cats players Lee Cattermole (left), Seb Larsson and Jermain Defoe sit at the top of Dafabet's homepage

The online betting site, Sunderland's official sponsors make Dick Advocaat's side 5/8 favourites for the drop

Dafabet's website proudly carries the Sunderland club crest and announces that they are the official club sponsor. An image of Black Cats players Lee Cattermole, Jermain Defoe and Seb Larsson also sits at the top of their homepage.

But a look at their odds for relegation have Dick Advocaat's side as 5/8 favourites for the drop, meaning they believe there is more chance of them going down than staying up. They also make them 1000/1 outsiders of all 20 teams to finish in the top four.

Sunderland are bottom of the table after two defeats. Advocaat called a clear-the-air meeting with his players at the weekend following their 3-1 loss at home to newly-promoted Norwich. They were beaten 4-2 at Leicester on the opening day after conceding three times inside 25 minutes.

They welcome in-form Swansea to the Stadium of Light on Saturday and then travel to Aston Villa before the international break.

And Advocaat admits he is considering changing a defence that has conceded seven times in the opening two games of a season for the first time since 1970.

Yann M'Vila looks on dejected after the Black Cats suffer their second consecutive Premier League loss

'I didn't want to change the backline already after one game,' he said.