25-year-old Liam made a string of superb saves at the Ammies' Peninsula Stadium to help the Saddlers secure a 2-1 victory against Graham Alexander’s side, adding to the New Year's Day triumph over Leyton Orient.
The Walsall-born stopper is currently battling it out with on-loan Southampton stopper Jack Rose and believes he is learning as the season progresses and was pleased with his save in the closing stages of the game.
Speaking via the club's official website, Liam said; "It’s just one of them, it’s flicked off his head and I’ve reacted to it. It’s not something you can train. it’s something that just happens so I’m pleased with that but like I said there are still things I need to work on.
"I think I need to be consistent, on the 29th I didn’t have a good game against Carlisle United so I’ll take that on the chin.
"You have to live and learn from those mistakes and hopefully put it into your game and keep progressing.
"You can play well but there’s always something you can work on so for me personally, that’s what I need to do. I think collectively that’s what we’ve started to do."
Roberts is now focused on tonight’s EFL Trophy last 16 tie with Portsmouth, admitting he is looking forward to a reunion with former teammate Craig MacGillivray and is dreaming of reaching Wembley Stadium for the second time in his career.
Liam continued; "There’s always a little carrot at the end of it so we need to focus on it. They’re the kind of games you thrive on and the ones you want to go and play in.
"They’re a strong side, I know Craig very well so it will be nice to see him as well. We need to focus on our game, like I said its momentum and we need to keep building it so hopefully we can get a result out of that, like you said – three steps away from Wembley."