Daniel and Divock do it for Jurgen

one of the biggest cheers of the night by miscuing a corner straight out of play for a throw-in.

The incident summed up Liverpool’s lethargic opening 20 minutes but the match was turned on its head by Sturridge’s quickfire double.

Sturridge drew his side level in the 25th minute, spinning in behind a static Saints defence to finish neatly into the bottom corner from Joe Allen’s cross-field pass.

The goal was Sturridge’s first since bagging a brace against Aston Villa in September and his first under Klopp.

Sturridge doubled his and Liverpool’s tally with a no-nonsense first-time shot from Emre Can’s sumptuous through-ball.

Saints were shell-shocked and Origi all but wrapped up the victory in the dying seconds of the first half. Southampton failed to deal with a Lallana corner and Moreno thumped the ball back towards goal with interest.

Moreno tried to claim the goal but TV replays showed Origi got the faintest of touches to leave Maarten Stekelenburg wrong-footed.

Southampton had not reached the semifinals of this competition since being knocked out by an Ian Rush-inspired Liverpool in the 1987 season.

A reprint of the programme from 28 years ago, which was dished out with the matchday magazine, was the closest Koeman’s men would get to relive their club’s former glories.

Klopp could even afford to rest two-goal hero Sturridge for the final half-an-hour, replacing his fit-again star striker with substitute Ibe.

Koeman threw on Shane Long and James Ward-Prowse as second-half substitutes in a desperate bid to save the game and keep alive their ambition to win a first major trophy since 1976.

Long had only been on the pitch a matter of seconds when he put a header into the side-netting.

Then Origi smashed in his second from just inside the penalty area after outpacing the hapless Steven Caulker.

Ibe put an embarrassing slant on the scoreline with a powerful right-foot finish 17 minutes from time after expertly controlling Moreno’s cross on the chest.

With four minutes remaining, Origo completed his hat-trick, heading home a cross delivered by substitute Brad Smith.