A concise profile of the sport at the heart of pubs and professional arenas.
Littler defeats Aspinall 11-8 to reach the World Matchplay quarter-finals; van Duijvenbode beats van Gerwen 14-12; Anderson progresses with 11-7 over Clayton.
The Scot Cameron Menzies leads 2-1 but retreats due to high blood pressure and dizziness. Medics clear him to go to his accommodation, but he forfeits the match and exits the stage. Gerwyn Price advances, while Gian van Veen edges Nijman in a 14-12 thriller.