Jurgen Klopp‘s side deservedly saw off their Merseyside rivals at Anfield, as they won 3-1 in relatively straightforward fashion.
Replacing the injured Mane in the second-half, the Belgian scored within minutes of coming on, firing past Joel Robles in front of the Kop.
Origi says he is pleased about the impact he made, and also spoke of how he hopes to become the next top quality striker at Anfield.
“I always said I want to be a top striker for this team and I feel that I can be, so I think I’m willing to prove on the pitch that I’m not an option for the future, but an option for today,” Origi said post-match.
“The team comes first and I’m very happy to help the team and the supporters and the club, of course.”
The 21-year-old also spoke about the importance of Saturday’s win and believes the Reds can finish the season in commanding fashion.
“I’m very happy. I think they’re always special games – from the moment I came to Liverpool I felt the gravity of this game and to be able to help the team win is important,” he added.
“It’s never easy [after an international break] because you go away with other circumstances, other teams, and then you have to come back and regroup.
“We had one good day to prepare with some players flying in from Brazil and other places, and I think we handled it well. I think this is a good start to get the Champions League ticket.”
“We have to try to take maximum points and I think we have all the tools to do this,” he said.
“Everybody’s very hungry and we have one goal in common, and that’s to finish in the highest spot possible in the league. We’re on a good way and we have to continue.”
Mane’s injury is a huge blow to Liverpool, but it is likely to give Origi a chance to prove his worth in the coming weeks.
The youngster has struggled for form this season, but he will hope to return to the level he showed 12 months ago, when his performances were often superb.
Origi has nine goals this season, and with a kind run-in coming Liverpool’s way – they don’t face another top-seven side between now and the end of the season – he may feel he can finish the season as his side’s top scorer, with Mane currently leading the way on 13.