Sam Allardyce says they have to 'hold their nerve' against Aston Villa - in what will be 'the biggest match of the season'.
Aston Villa sits at the bottom of the Premier League table, just one place below Sunderland.
This all-important match will take place at the Stadium of Light tomorrow (Saturday) and can be seen as a relegation battle.
This is how the Sunderland manager describes the tie:
Sunderland boss Gus Poyet says his side 'need to win' in this weekend's Premier League clash with Aston Villa.
The Black Cats face Villa at the Stadium of Light tomorrow with Tim Sherwood's side just a point behind Sunderland in the Premier League table.
Jonas Gutierrez will be back in the Newcastle United squad this weekend for the first time since overcoming testicular cancer.
The Argentinean midfielder returned to action in an under-21 Premier League Cup win over West Ham in December. But he could finally make his first-team comeback when the Magpies welcome Aston Villa to St James' Park on Saturday.
Newcastle boss John Carver confirmed the 31-year-old could be on the bench for the Premier League clash.
Middlesbrough have reached an agreement with Aston Villa to extend goalkeeper Shay Given's loan spell at the Riverside.
The 37-year-old has played seven games for Boro since his arrival on Teesside a month ago. The Republic of Ireland international will now remain at the club until February 28.
Middlesbrough's Chief Executive Neil Bausor said: "We are extremely delighted to secure the extension of Shay's loan until the end of February."
Given spent 12 years at Newcastle United before moving to Manchester City in January 2009 and then onto Aston Villa in 2011. He also made 17 appearances for Sunderland during a loan spell in 1996.
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