Aged 19 years and five days, Toxteth-born Curtis Jones became the youngest first-team captain in Liverpool's history.
"All the boys went out there and showed belief, character, showed everything that the manager looks for in his players," said Jones.
"I was grateful to become the youngest captain of the team but most importantly we came away with the win with a great performance.
"The boys showed heart, character and a hard decision for the next game."
'Klopp should have been there'
Former England captain Alan Shearer said "it doesn't sit right with me" that Klopp missed Tuesday's match.
The German said last week he "decided three weeks ago we would have a mid-season break based on a letter we got [from the Premier League] in April 2019".
Top-flight teams were all due to have two weeks off in February but the 2-2 draw in the original tie meant the replay fell within that period, prompting his decision to miss the match, along with his entire senior squad.
"I understand Jurgen's point in terms of his players having the break they were told they'd have," said Shearer on BBC One.
"He is the manager so he can put whichever team he wants but it doesn't sit right with me - he should be there. He should be at the ground giving the support to those young players."
Former England keeper Rob Green, speaking to BBC Sport, said Klopp's decision not to field his senior players and stay away was "clever mind games".
"Coming from Germany, he thinks we're crazy playing all these games, so it's a really interesting quandary and one where you're thinking he's got the upper ground here," added Green.