Duane Holmes says the seamless penalty shoot-out routine which put Huddersfield Town into the Under 21 Premier League Cup semi-finals was down to previous experience and thorough preparation.

Frankie Bunn’s side scored every time from the spot as they followed up a second-round win at holders Southampton by beating Charlton Athletic 5-4 after their quarter-final clash at the John Smith’s Stadium ended 1-1 after extra time.

Holmes, having equalised with a penalty in the first half, scored Town’s first in the shoot-out to set the tone.

Jack Boyle, Flo Bojaj, Jordy Hiwula and Regan Booty then struck successfully while Charlton missed their third kick.

Watch Regan Booty score the decisive kick

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Town, who like Charlton play in the Professional Development League, a level below the Under 21 Premier, beat the London club 6-5 on penalties in last season’s second round, when Holmes also featured.

And the 21-year-old midfielder said: “We’ve done extra time and penalties before and come through, so we had experience of it.

“And we also practised for a shoot-out beforehand, doing the walk up and everything, so we were ready.

“I have been taking penalties all the time I have been playing, so I was happy to take my two.

“There’s no set routine, I just decide where I want to put the ball, stick to it and try to his it hard an accurately.

“I was getting a few words from the Charlton keeper before my kick in the shoot-out, but I just made sure I stayed focused.

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“All the boys put away their penalties well, and it’s great to be through to the semi-finals.

“We got knocked out in the quarters last season, and we were all determined to make it to the semis this time.

“Charlton are a good side too and they gave us a tough game and created some good chances.

“Once or twice, especially in extra time, we had to be grateful to our keeper (Tadhg Ryan).”

The semi-final draw is yet to be made, and Holmes added: “It’s sure to be difficult at this stage.

“But we are on a good run (only one defeat in 18), and we won’t be overawed.”