 From 1994 to 2012, matches at the World Matchplay had to be won by two clear legs.For example, the first round was usually played over the first to 10 legs, but if the score reached 9–9, play continued until either player gained a two-leg lead.Starting with the 2013 World Matchplay, if a two leg-lead hadn't been established after six extra legs, then a sudden death leg is played, so sudden death would come into play in a first round match at 12–12.