Lucas Leiva insists Liverpool head to Chelsea motivated by a sense of injustice following the 2-1 defeat at Manchester City on Thursday.
Brendan Rodgers' men produced a spirited performance at the Etihad against the only team with a 100 per cent home record in the Premier League.
Raheem Sterling had a legitimate goal disallowed for offside and Luis Suarez had penalty claims waved away as Liverpool left empty-handed, so Lucas is determined to bounce back at Stamford Bridge.
"Of course, everyone was really disappointed that we never got the three points, or at least a point [at City]," Lucas told the club's official website.
"Everyone could see that we really went to win the game. I think we played some fantastic football.
"Maybe we felt a little bit unlucky with some of the decisions. If they were for us, not against us, it would have been a different result. We had some chances to score.
"Overall, it was a positive performance but of course we are disappointed because we lost. Now we have to move on - we have another big game and it becomes even more important after the defeat the other night.
"We showed against Tottenham [a 5-0 win at White Hart Lane earlier this month] as well, a big team, that we went there and played our football and passed the ball really well and we pressed.
"That's our main quality: when we press the team and try to play, we become a very hard team to beat.
"That's the way we have to play every game; Sunday will be another opportunity for us to show that we have great momentum despite the defeat we had against Manchester City."