West Ham are set to play host to the Black Cats on Saturday, and both sides will be desperate for the three points.
Both West Ham and Sunderland have disappointed over the campaign so far, and currently sit near the bottom of the Premier League table.
The Hammers are occupying 14th place in the top flight standings, while Sunderland are rock bottom of the table.
West Ham did manage to pick up a victory in their last outing, when they beat Crystal Palace 1-0 at Selhurst Park.
And Redknapp felt that West Ham’s performance against Palace was impressive enough to suggest that they will be able to brush aside the challenge of David Moyes’ side.
“West Ham on Saturday looked very good,” Redknapp said. “The big problem is Aaron Cresswell will be suspended, so they’ll miss him, but I still think West Ham will be too strong at home for Sunderland. I think Sunderland have it all to do.”
Sunderland are already four points adrift of safety so another defeat would be disastrous.
If West Ham do manage to pick up the victory as Redknapp is predicting they will, they could move up to 12th.