There is a world-wide ranking system for croquet players which is based on the results of recognised competitions and tournaments. It is sanctioned by the World Croquet Federation (WCF) as the official world rankings. Currently only games played under Advanced Rules (i.e. not handicap, 26-point games with lifts and contacts) are counted. Whilst records are kept of all players, only those who have played ten or more qualifying games in a season are listed and ranked.
The system was devised by Stephen Mulliner for the Croquet Association and is now maintained by Chris Williams, the Croquet Association's Ranking Officer. It is based on the Elo system used in chess and is complex. For information on how the rankings are derived see the Technical Section on this site. Chris Williams is to be commended on his diligence and immense labour in keeping the rankings going.
National ranking are produced by taking subsets from the world rankings. Because of the seasons in the northern and southern hemispheres there is a leap-frogging of the southern and northern players through the year
Chris Williams' Croquet Records site www.croquetrecords.com offers further croquet records and statistics.
The two web pages below allow you to calculate how your index and grade change. They use javascript and will work offline. The algorithm is however very sensitive to the precision of the numbers used hence you will not get quite the same answer as the Ranking Officer. They can be downloaded and saved on your computer for future use.
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