Jamie Redknapp says he was too early to write off Sunderland's survival chances.
The pundit admits he felt they would be certain to be relegated after their midweek loss to Liverpool.
He feels striker Jermain Defoe will be vital to their chances of staying in the Premier League, after he scored a vital goal in the victory over Villa.
He said: "I watched Sunderland lose to Liverpool last week and thought they were done for. But that was a huge win over Aston Villa.
"Villa look gone and there’s still an awfully long way to go for Sunderland, but Defoe will give them hope."
Redknapp is right that Sunderland have a big task ahead, currently in 19th place in the table with 15 points, four points from 17th place.
Sunderland's next league game is a crucial fixture away to Swansea, who currently occupy 17th, with an FA Cup game against Arsenal in between.
How they get on in that game could influence Redknapp to write them off again if they lose, and may cause him to wish he did not place too much stock in a win over a woeful Aston Villa side who are seven points now behind the Black Cats.