Liverpool have shipped six goals in their last two Premier League games and suffered a shock 3-1 defeat to Hull City on Sunday, a result which leaves them seven points adrift of leaders Arsenal.
|10/1||Liverpool are 10/1 with BetVictor to win the Premier League|
"In our last two games we've conceded six goals," said the Liverpool manager.
"So we need to be much, much better than that and that's something we need to return to on Wednesday night."
Rodgers also bemoaned the ankle injuries picked up by Daniel Sturridge and Philippe Coutinho ahead of the clash with Hull, with the former set for eight weeks on the sidelines.
"There's no doubt the quality in our squad, with all due respect, isn't big enough to cope with two big players like that missing," Rodgers added.
"This little period now will test us. We've got players who will come in and it will be a great opportunity for them to come in and stake their place in the team. Hopefully we get back to winning games on Wednesday."