Wayne Mardle says there's "no ceiling" to what Luke Littler can achieve in darts after his latest major title at the World Grand Prix.

The 18-year-old demolished Luke Humphries 6-1 in Sunday night's final to claim his seventh major trophy since bursting onto the scene at the World Championship less than two years ago.

Littler added the World Grand Prix to a trophy list that already features the World Championship, World Matchplay, Premier League, UK Open, Grand Slam and World Series, and he moved to within £70,000 of toppling Humphries at the top of the world rankings.

And Mardle has no doubt he will soon be the world No 1.

"He's got it all," he told Sky Sports.

"We all know he's got it all. He knows he's got it all. The world No 1 knows he's got it.

"What I admire about him is the w

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