Cameron Brannagan made his first ever start for Liverpool last night in the 1-0 win over Bournemouth.
The 19-year-old renewed his contract at the club earlier in the week and was promptly rewarded by new manager Jurgen Klopp.
Liverpool won the game 1-0 thanks to a Nathaniel Clyne goal, setting up a quarter-final tie away to Southampton.
Whether Brannagan will get a chance in that match remains to be seen, but former Premier League striker John Hartson felt he could be proud of his display in front of the Anfield crowd.
The former West Ham and Arsenal striker told The BBC's live coverage: "Cameron Brannagan has done really well.
"He has not looked out of place or anything wrong. He has not done anything extravagant in terms of efforts on goal but he has been decent."
Brannagan played 65 minutes of the game before being substituted for Lucas Leiva.
On the big stage under the Anfield lights, it was understandable he displayed a few nerves early on but overall did well.
Jurgen Klopp felt the youngster had a tough test, explaining to Liverpool's website: "Cameron Brannagan was in a very difficult position in the system we played today, the half space as a No.8. It’s really not easy to defend that position."
The England under-20 international made his first appearance of the season against Bordeaux last month in the Europa League, but played just 10 minutes as a substitute.