One-day cricket is popular with spectators as it can encourage aggressive, risky, entertaining batting, often results in cliffhanger endings, and ensures that a spectator can watch an entire match without committing to five days of continuous attendance.
Each team bats only once, and each innings is limited to a set number of overs, usually fifty in a One Day International and between forty and sixty in a List A. List A is a classification of the limited-overs (one-day) form of cricket, technically as the domestic level.
Despite its name, important one-day matches, international and domestic, often have two days set aside, the second day being a "reserve" day to allow more chance of the game being completed if a result is not possible on the first day (for instance if play is prevented or interrupted by rain).
As mentioned above, in almost all competitive one-day games, a restriction is placed on the number of overs that may be bowled by any one bowler. This is to prevent a side playing two top-class bowlers with extremely good stamina who can bowl throughout their opponents' innings. The usual limitation is set so that a side must include at least five players who bowl. For example, the usual limit for twenty-over cricket is four overs per bowler, for forty-over cricket eight per bowler and for fifty-over cricket ten per bowler. There are exceptions: Pro Cricket in the United States restricts bowlers to five overs each, thus leaving a side requiring only four bowlers.
The idea for a one-day, limited 50-over cricket tournament, was first played in the inaugural match of the All India Pooja Cricket Tournament in 1951 in the small town of Thrippunithura in Kerala. It is thought to be the brain child of KV Kelappan Thampuran, a former cricketer and the first Secretary of the Kerala Cricket Association. The one day limited over cricket game was later adapted and played between English county teams for the first instance on 2 May 1962. Leicestershire beat Derbyshire and Northamptonshire beat Nottinghamshire over 65 overs in the "Midlands Knock-Out Cup", which Northamptonshire went on to win a week later. The following year, the first full-scale one-day competition between first-class teams was played, the knock-out Gillette Cup, won by Sussex. The number of overs was reduced to 60 for the 1964 season. League one-day cricket also began in England, when the John Player Sunday League was started in 1969 with forty over matches. Both these competitions have continued every season since inauguration, though the sponsorship has changed. There is now one 50 over competition, which is called the Royal London One-Day Cup.