Old timers among you may remember the Predictions League I used to run.
I am consider resurrecting it for the World Cup if there's enough interest. Would probably use the exact same rules as previously used as they seemed to work to me, but would be open to suggestions for amendments to it.
For reference, this is what the rules used to be:
A total of 80 points made up as follows:
Toss - 1 point
Match result - 10 points (a tie will count as a draw)
Batsman scoring at the highest strike rate in the match - 10 points
Strike rate of the quickest scoring batsman - spot on - 12 points; within 5 - 8 points; within 10 - 4 points; within 15 runs - 2 points
Most economical bowler - 10 points
Economy rate of the most economical bowler - spot on - 12 points; within 0.1 - 8 points; within 0.3 - 4 points; within 0.5 - 2 points
Total runs in the match - spot on - 15 points; within 10 runs - 10 points; within 25 runs - 7 points; within 50 runs - 5 points; within 100 runs - 2 points
Total wickets in the match - spot on - 10 points; within 1 wicket - 7 points; within 2 wickets - 5 points; within 3 wickets - 2 points
For quickest scoring batsman, the batsman must have scored at least 10% of his team's runs.
For strike rate, please submit a round number to represent runs scored per 100 balls.
For most economical bowler, the bowler must have bowled at least 10% of his team's overs.
For economy rate, please submit a number to 1 dp representing runs per over.