Cricket is unusual among sports in that its versions differ not by category but by duration, and the difference in duration is enormous. The longest form runs for five days. The shortest is done inside ninety minutes. They share a pitch, a set of dismissals and most of a rulebook, and they are otherwise close to being different games.
Test cricket
Up to five days, two innings a side, no limit on overs. A team bats until ten wickets fall or until its captain declares.
The absence of an over limit is the whole thing. Because nobody has to score quickly, the pressure has to be manufactured: by bowlers building sequences of unplayable deliveries, by fields set for a specific error, by conditions that shift across five days as the pitch deteriorates. A batter can face two hundred balls for sixty runs and have played a decisive innings.
It is also the only format where a draw is a common and legitimate result. If time runs out before either side has been bowled out twice, nobody wins, and the side that survived often regards that as a victory of its own. Newcomers find this baffling; it is the reason the format produces the tension it does.
Test cricket is played between a limited group of nations, and the whole history of it is in our archive.
One Day Internationals
Fifty overs a side, one innings each, finished in a day. Introduced in the 1970s and the format that made cricket a television sport.
Fifty overs is long enough that a side can rebuild after losing early wickets and short enough that it cannot rebuild forever. That tension produces the format's characteristic shape: a measured start, consolidation through the middle, and an assault in the final ten overs. Fielding restrictions in the opening overs push the early scoring up; the rest is a negotiation between the two sides about when to take the risk.
The World Cup is played in this format, which is a large part of why it endures despite pressure from the shorter game. ODI results make up a substantial part of the archive.
Twenty20
Twenty overs a side, about three hours, and the format that reshaped the sport's economics. Almost every cricketing nation now runs a domestic T20 league, and those leagues are where most professional cricketers now earn most of their money.
Twenty overs removes the middle phase entirely. There is no consolidation, because there is no time for it. A batter who takes ten balls to settle has used a twelfth of the innings. Specialist skills emerged in response: the slower ball, the wide yorker, the ramp shot, the reverse sweep played on purpose rather than in desperation. Fields are set for damage limitation rather than for wickets.
T20 records now make up the largest single block of matches played each year.
T10
Ten overs a side, around ninety minutes. Played in a small number of franchise competitions rather than internationally.
At this length the risk calculation collapses almost to nothing. Batters attack from the first ball because there is no other option, and bowlers accept that they will be hit and try to control how often. Whether it is a serious format or an exhibition is argued about; what is not in doubt is that it fits into an evening.
The Hundred
A hundred balls per side, introduced in England in 2021. Bowlers deliver in sets of five rather than six, and can bowl two sets consecutively.
It sits close to T20 in length but the change to the over structure alters the rhythm noticeably, because captains manage bowlers in blocks of ten balls rather than six, which changes when a spell can be used. It was designed explicitly to bring in an audience that does not otherwise watch cricket, and it is the only major format with a fully integrated men's and women's competition.
List A and first-class
Two terms that describe categories rather than formats. First-class cricket is any match of three days or more with two innings a side. Test matches are first-class, and so is domestic red-ball cricket. List A is the equivalent for limited-overs cricket of forty overs or more, which covers ODIs and most domestic one-day competitions.
They matter because career statistics are compiled against them. A batting average quoted for a domestic player is almost always a first-class average, and it is not comparable to a T20 average in any meaningful way.
Why the same player looks different in each
Because the formats reward opposite things. A Test opener is paid to survive the first hour; a T20 opener is paid to attack it. A Test bowler builds pressure over a six-over spell; a T20 bowler has four overs total and may bowl them in four separate spells at four different moments.
Some players cross over completely. Most are noticeably better at one than another, and the modern schedule increasingly asks them to choose. When you compare figures across formats in the archive, that is worth keeping in mind, because the numbers are measuring different jobs.
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