"The pros will practice in clusters and play a whole ... Start on double one and throw one dart at it. Whether you hit it or not, throw your second at double two and your third at double three.

The 20 is the highest individual number on the board - meaning its treble, worth 60, is the biggest score a player can achieve from a single dart. Players throw three darts on each turn ...

"I used to combat it with extra practice. It was heard of back in ... it became so bad he would take 60 seconds to throw three darts. By the age of 13, he was forced to quit and at the time ...