Former Sunderland chairman, manager and player Niall Quinn believes the Black Cats could cause an upset by beating Chelsea on Saturday evening.
He thinks Chelsea's upcoming midweek exertions in Europe could cause them problems, as well as the psychological effect last April's Sunderland victory at Stamford Bridge could have upon both sides.
Loanee Sebastian Coates is being readied for a Premier League debut in Sunderland colours.
Black Cats boss Gus Poyet may decide to rest Wes Brown and hand a start to Coates at some stage over the next three games, with those matches squeezed into an intense eight-day period.
Gus Poyet wants Sunderland to focus on upsetting the big boys when facing Chelsea this weekend.
Uruguayan Poyet feels the mentality of the club needs to change, so they no longer feel that it's okay if the Black Cats lose to a top rival.
He wants his side to view every match as an opportunity to win - no matter who the opposition.