Luke Littler sends mind games warning as World Darts Championship defence begins

LUKE THE NUKE: Luke Littler says other players cannot get inside his head (John Walton/PA)

Luke Littler says his World Darts Championship title defence will not be derailed by opponents trying to get inside his head.

The 18-year-old is heading back to defend his crown at Alexandra Palace, where he became the youngest ever winner in January.