Explaining the eliminator
If either of the semi-finals or the final finish in a tie, the winner will be decided through a one-over knockout
ESPNcricinfo staff
28-Mar-2011

If that's the result of any of the three remaining games in the World Cup, the OOPSE will decide the winner • Satish Acharya
The two World Cup semi-finals and the final have a reserve day each, which will be used if both teams haven't batted at least 20 overs, but in the case of a tied game, the one-over-per-side eliminator (officially-named OOPSE, for short), will come into play to separate the teams.
Broadly, it involves each team batting for an over, with a team getting bowled out if it loses two wickets. One can imagine headline writers having a field day if the OOPSE goes wrong, but the ICC has put in place several levels of elimination - however contrived - to ensure one team does emerge the winner at the end. Here are some of the salient features of the method:
If the teams are equal on scores after the over, there are three further criteria to decide the winner.
the runs scored in each ball, starting with the last one, will be checked, and the team with the higher scoring delivery is the winner. If, for instance, both teams struck fours off the last ball, but team B scored two off the fifth compared to team A's single, then team B will be declared the winner. The runs scored off any ball is defined as all the runs added since the completion of the previous legitimate delivery.
If all these elaborate methods still don't produce a winner, the last fall-back option for the semi-finals is considerably less complicated - the positions of the teams in their respective groups. In that case, Sri Lanka and Pakistan have the advantage, having finished higher than New Zealand and India.
If nothing separates the two teams in the final, though, both sides will be declared joint winners.