Swansea boss Brendan Rodgers refused to single keeper Gerhard Tremmel out for criticism following the 2-1 FA Cup defeat at Bolton.
Rodgers made ten changes to his side, including replacing regular No. 1 Michel Vorm with Tremmel, for Saturday's clash at the Reebok.
His much-changed side took the lead against the run of play through Luke Moore's deft chip in the 43rd minute but former Swansea player Darren Pratley equalised for the Trotters soon afterwards before Chris Eagles settled the fourth round tie 11 minutes after the break.
The Trotters' winner came when Tremmel parried Martin Petrov's shot, allowing Eagles to tuck the ball into the corner.
While Rodgers refused to single Tremmel out for criticism, he felt mistakes on his team's part had ultimately proved to be their undoing.
"There is no blame attached to him," said the Swansea boss.
"I feel I have the number one goalkeeper in the league in Michel Vorm and Gerhard offers a wonderful support to him.
"He doesn't get a lot of game time and he is a good guy. There is certainly no blame attached, but we could have prevented their move for the second goal."
Rodgers also praised former player Pratley - who scored his first goal for the Trotters since his summer switch to the Reebok - even if he was unsure whether or not the goal should have stood.
"It was a decent header, although I felt he was probably just a fraction offside when the ball came in," Rodgers said.
"But we should never have got to that point.
"I am pleased for Darren because he is a good lad, he has decided to leave Swansea and move here and maybe it hasn't quite worked out how he wanted.
"There is no doubt that he will show he is a really good player for Bolton."