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Duckworth-Lewis-Stern  The Duckworth-Lewis-Stern system is widely regarded as the best method yet devised for calculating what target should be set for the side batting second when a limited-overs match either starts late or is interrupted, and hence shortened, because the weather is poor. It takes its name from the two statisticians who invented it - Frank Duckworth and Tony Lewis plus Professor Steven Stern, who is now the custodian of the method Unlike simpler mathematical systems such as run-rate, which sets targets based only on the average runs per over scored by the side batting first, the Duckworth-Lewis_Stern (or D/LS) system takes into account other contributory factors, such as wickets lost and number of balls remaining. The D/LS method consists in practice of a set of special tables used by the scorers who undertake working-out and displaying the revised target required. | ||||||