ICC ODI rankings
| Administrator | International Cricket Council |
|---|---|
| Format | One Day International |
| First tournament | 2002 |
| Last tournament | ongoing |
| Tournament format | notional (ongoing points accumulation through all matches played) |
| Number of teams | 12 33 Associate members |
| Current champion |
 England (125 rating) |
| Most successful |
 Australia (141 months) |
The ICC ODI Championship is an international One Day International cricket competition run by the International Cricket Council. The competition is notional in that it is simply a ranking scheme overlaid on the regular ODI match schedule. After every ODI match, the two teams involved receive points based on a mathematical formula. Each team's points total is divided by their total number of matches played to give a rating, and all the teams are ranked in a table in order of rating.
By analogy to cricket batting averages, the points for winning an ODI match are always greater than the team's rating, increasing the rating, and the points for losing an ODI match are always less than the rating, reducing the rating. A drawn match between higher and lower rated teams will benefit the lower-rated team at the expense of the higher-rated team. An "average" team that wins as often as it loses while playing a mix of stronger and weaker teams should have a rating of 100.
As of 2 May 2018, England lead the ICC ODI Championship with a rating of 125, while the lowest rated team, Ireland, has a rating of 38.
In late 2005, the International Cricket Council ranked the top non-Test nations from 11–30 to complement the Test nations' rankings in the ICC ODI Championship. The ICC used the results from the 2005 ICC Trophy and WCQS Division 2 competition (i.e. the primary qualification mechanisms for the 2007 Cricket World Cup) to rank the nations.
These rankings were used to seed the initial stage of the global World Cricket League. Teams ranked 11–16 were placed into Division 1; teams 17–20 were placed into Division 2; teams 21–24 were placed into Division 3; the remaining teams were placed into the upper divisions of their respective regional qualifiers.
As of 19 April 2009 the top six associates/affiliates gained one day status. Kenya and Ireland have both qualified to appear on the main rating table, Kenya from its existing status and Ireland for its two victories in the 2007 World Cup. Following their victory over Bangladesh in July 2010, the Netherlands joined the main table. Afghanistan, Canada and Scotland remain on the secondary table. In May 2009, the ICC added a rankings table for all associate and affiliate members. This contained both global and regional placings. In June 2018, the four associates with ODI status were moved to the main ranking list.
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