LUKE LITTLER made it back-to-back record-breaking performances in the Czech Darts Open.

The "unplayable" teen sensation left Damon Heta grimacing in disbelief as he smashed in a 116.51 average to win 6-3 in Prague.

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That broke The Nuke's own record set less than 24 hours earlier of 110.43 in the victory over Nathan Aspinall.

It was the fifth-highest average in Euro Tour history, earning the 17-year-old a quarter-final against Michael van Gerwen on Sunday night.

Heta himself averaged an excellent 105.6 and Littler said: “Damo played very well.

"But I’ve been practising a lot this morning with the darts.

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“It was a good decision to change them. Hopefully I can go all the way tonight. I think I’m sticking with these ones now.

“When I’m playing that well I know my average is up in the hundreds. I had a glance up at the screen, it was 114 at one point.

“But that’s when Damo got the next two legs. I just said to myself in the last leg just focus and I went out in 10.

“He was coming back then. But I said to myself just get this leg and get it over and done with. Went six into the nine again and hit tops.”

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It was so impressive that PDC Euro presenter Philip Brzezinski called it a “disgusting” display.

Meanwhile, commentator Dan Dawson rated it as “one of the best performances in Euro Tour history”.

Littler rattled off a 180 in each of the opening five legs, plus a 171 and a 122 finish to lead 4-1.

Heta, to his credit, kept battling and remarkably pulled it back to 5-3.

But Littler continued his barrage of maximums, making it seven in nine legs, before wrapping it up with tops to complete another historic display.

Heta responded by leaning over with a dazed look of sheer incredulity.

And fans were as amazed as the Australian by his conqueror's display.

One viewer posted: "Heta v Littler is fast becoming one of my favourite fixtures to watch... astonishing stuff. Heta did very little wrong, Littler just unplayable there."

Inside Littler's massive rise

LUKE LITTLER has taken the darts world by storm since exploding onto the scene at the PDC World Championship at the beginning of the year.

The Nuke reached the final on his Ally Pally debut at just 16 years of age - smashing records along the way.

He has then gone on to win a host of PDC events and the Premier League title - which he claimed at the O2 Arena by beating world champion Luke Humphries in May.

He also finished his first season in the World Series as the No1 ranked player.

He has joined Jude Bellingham on the Forbes 30 Under 30 Europe list.

And the teenage titan even had to snub an invite from the WWE.

The Sun exclusively revealed that Littler is plotting to create a fitness empire.

He is also cashing in away from the Oche thanks to an Instagram side hustle.

And he's even the face of a brand new cereal.

But he is newly single after splitting from girlfriend Eloise Milburn following a 10-month relationship.

Check out all of our latest Luke Littler stories.