It proved to be a night of significant upsets and predictable progressions in the League Cup, with a competition's front-runners making an unexpected departure.
The Eagles produced a dominant 3-0 victory against Liverpool, completing a notable hat-trick of triumphs over the Anfield outfit in the last few months.
This result signifies Palace have now defeated Liverpool on 3 separate occasions, which includes a spot-kick win in the Community Shield and a 2-1 Premier League triumph at Selhurst Park.
Away fans could be heard playfully chanting, "Can we face you every week?"
Despite their recent achievements, they have never made it to the showpiece event of the EFL Cup, having fallen at the last-four stage on 4 previous times.
Their most recent penultimate stage appearance was back in the year 2001, making this run particularly significant for them.
Compounding their recent success, the team had previously never claimed the Football Association Challenge Cup or Community Shield before this year.
At the same time, other big clubs secured their spot in the subsequent stage.
This tournament proceeds to deliver excitement and surprises, setting up an intriguing road to the culmination at the national stadium.