Know about the Duckworth Lewis(D/L) method, controversial yet reliable to get a result

Earlier  the "best-scoring overs" method, used in the 1992 Cricket World Cup, left the South Africa requiring 21 runs from one ball (when the maximum score from one ball is generally six runs). Before a brief rain interruption, South Africa was chasing a target of 22 runs from 13 balls but, following the stoppage, the team's amended target became 21 (a reduction of only one run) to be scored off just one ball (a reduction of 12 balls). The D/L method avoids this flaw: in this match, the revised D/L target would have been four runs to tie or five to win from the final ball.