International cricket
In addition to the one-day series and tournaments organised by the nations themselves, the ICC organises two One Day International tournaments. The World Cup is held every four years; it involves all the Test-playing nations and a number of teams advancing from the immediately preceding ICC World Cup Qualifier. The ICC Champions Trophy, previously known as the ICC Knockout Cup, is a shorter tournament held every four years in between World Cups. The ICC also organises a T20 International tournament, the ICC World Twenty20, which is generally held every two years and, as in the latest competition, involves the ten full ICC members and six associate members who qualified through a qualifier competition, the ICC World Twenty20 Qualifier.
List A cricket
List A cricket is a classification of the limited-overs (one-day) form of the sport of cricket. List A cricket includes One Day International (ODI) matches and various domestic competitions in which the number of overs in an innings per team ranges from forty to sixty, as well as some international matches involving nations who have not achieved official ODI status. Together with first-class and Twenty20 cricket, List A is one of the three major forms of cricket recognised by the International Cricket Council (ICC).
Most Test cricketing nations have some form of domestic List A competition. The scheduled number of overs in List A cricket ranges from forty to sixty overs per side.