Sunderland striker Djibril Cisse is confident the Black Cats can win their battle for Premier League survival.The 27-year-old Frenchman has seen his side slip alarmingly down the table in recent weeks to the point where they are in severe danger of being sucked back into the scrap at the bottom.Last Saturday's 2-1 home defeat by Wigan, which came seven days after Robbie Keane's late equaliser at the Stadium of Light snatched two points from their grasp, left the Black Cats just three points clear of the relegation zone.They head for Manchester City on Sunday and then go to West Ham knowing that any extension of a run which has brought just two league wins in 11 attempts could have dire consequences.The situation on Wearside is not yet parlous, but Cisse and his team-mates are well aware that the comfort zone they established with home victories over Fulham in January and Stoke last month has all but evaporated.However, the Frenchman maintains their fate remains in their own hands.He said: "There are a lot of points still, so we can still turn the situation."But yes, it's annoying to not score goals, it's annoying to not win games, to be 1-0 up and in the last minute, concede a goal."It is annoying but there are a lot of games and still a lot of time."It's a matter of one game. We need a victory and the I think we would be back to the right way and start winning games again."But we need that game and we need it quickly."Saturday's defeat by Wigan was, remarkably, Sunderland's seventh in the league on home turf this season, although just the second under new boss Ricky Sbragia.They have been well supported at the Stadium of Light - a crowd of 39,266 watched Saturday's game - but patience is starting to wear thin.Indeed, the players were booed from the pitch after Steve Bruce's side ended their wait for a league win at the ninth attempt on a black day for the hosts.Eastlands may not be the ideal venue at which to try to end a run of four games without a victory - City have won seven of their last eight games there in all competitions.However, Cisse admits there may be less pressure on the Black Cats than there is on their own park.He said: "I don't think it is going to be easier to go there because City are really good at home."But maybe there will be less pressure because we are away and we don't have all the stadium behind us."But still, the pressure is going to be there."Pressure is something Cisse, who does not yet know whether or not his loan move from Marseille will become permanent during the summer, and strike-partner Kenwyne Jones have had to deal with in recent weeks as they struggle to develop their on-field relationship.They have claimed half of the club's eight goals in their last 11 league games between them, but neither has found the net since the Trinidad and Tobago international struck against Stoke on February 7.However, Cisse has been around long enough to know that personal droughts do come to an end eventually.He said: "It happens. Every season you have your periods where you don't score goals."But you just need to be strong and believe in yourself."