Despite the final scoreline - 17-10 in Penrith's favour - the Club Captain says the competitive, tenacious effort from blue and gold is a step in the right direction for the developing Eels' side.
"It was definitely enjoyable to play knowing that we were in the fight," Mannah said.
"Our preparation was good all week and there was just a good vibe in the change rooms before the game."
"Even when they scored those two tries there wasn't that feeling of 'here we go again'; there was more of a better attitude in everyone's eyes, everyone looked switched on, and I had the feeling we were going to be in the contest even though the score wasn't the best to start with."
"Like 'Sticky' said we've been training really well: if you watch us training during the week you'd think we were going a lot better than we are."
"And it was just pleasing to see the boys go out there and do what we were coached [to do]."
But the Guildford junior says he won't be satisfied until the Parramatta side can consistently reproduce their positive progress from the training paddock on the field on game day.
"As a player, I want to make sure that we build on this as well," Mannah said.
"We've got a game in Canberra on saturday and we'll try and make sure we just keep taking those positive steps forward."
"I don't want to go backwards anymore."
Click here to watch the highlights from the match.