Cricket is one sport played in three very different shapes. A Test match can run for five days and still end in a draw. A One Day International (ODI) is settled in a single day. A Twenty20 (T20) game is over in about three and a half hours. The basic laws are the same in all three, the bat, the ball, the 22-yard pitch and the ways a batter can be dismissed, but the time available changes almost everything else: how batters think, how captains use their bowlers, and what a "good score" looks like.
This guide explains how the three international formats differ, where each one came from, and why India plays all of them at the highest level.
A quick history of the three formats
Test cricket is the oldest form of the international game. The first Test was played between Australia and England in Melbourne in March 1877. India played its first Test in 1932, against England at Lord's. For almost a century, Tests were the only kind of international cricket.
One Day Internationals arrived in 1971, when a washed-out Test in Melbourne was replaced with a one-day match between Australia and England. The format grew quickly, and the first men's Cricket World Cup was held in England in 1975. India's win at the 1983 World Cup, under Kapil Dev, is widely seen as the moment cricket became a mass passion across the country. India won the ODI World Cup again in 2011 on home soil.
Twenty20 began as a domestic competition in England in 2003. The first men's T20 International was played in 2005, and the first ICC World Twenty20 followed in 2007, which India won in South Africa under MS Dhoni. That title helped inspire the Indian Premier League, which started in 2008 and changed the economics of the sport worldwide. India won the T20 World Cup a second time in 2024.
The key differences at a glance
- Length: a Test is scheduled for up to five days; an ODI is 50 overs per side; a T20 is 20 overs per side.
- Innings: each team gets two innings in a Test, and one innings in an ODI or T20.
- Results: a Test can be won, lost, drawn or (very rarely) tied. Limited-overs games almost always produce a winner, using methods such as a Super Over when scores are level.
- Ball and kit: Tests are traditionally played in white clothing with a red ball (a pink ball is used in day-night Tests). ODIs and T20s use a white ball and coloured team kits.
- Bowling limits: there is no limit on how many overs one bowler can bowl in a Test. In an ODI a bowler can bowl at most 10 overs, and in a T20 at most 4.
- Fielding restrictions: limited-overs cricket uses powerplays that cap the number of fielders allowed outside the 30-yard circle. Tests have no such rule.
Test cricket: the long game
A Test is built around time rather than overs. Each day normally has a minimum of 90 overs, split into three sessions with breaks for lunch and tea. To win, a side has to bowl the opposition out twice and score more runs in total. If time runs out before that happens, the match is drawn, no matter how far ahead one team is.
That single fact shapes the whole format. Batters can afford to leave balls outside off stump, wear the bowlers down and build an innings over hours. Bowlers rely on patience, swing, seam movement and, later in the match, spin as the pitch wears. Captains set attacking fields with slips and close catchers because taking 20 wickets matters more than saving runs.
Conditions also change over five days. A pitch that helps fast bowlers on the first morning may become flat for batting on day two and turn sharply for spinners by day four or five. Weather, light and the condition of the ball all play a part. A team that leads by a large margin after the first innings may ask the opponents to bat again straight away, which is called enforcing the follow-on.
Since 2019, Test results also feed into the ICC World Test Championship, which gives the series played around the world a wider context and ends with a final between the top two sides.
ODI cricket: the balanced middle
A One Day International gives each side 50 overs to score as many runs as possible. The team batting second needs to pass that total before its overs run out or it loses all 10 wickets.
The modern ODI has three powerplay phases. In the first 10 overs only two fielders are allowed outside the inner circle, so openers try to score quickly while the field is up. In the middle overs up to four fielders can be outside the circle, and in the last 10 overs up to five. Two new white balls are used, one from each end, which helps keep the ball hard for longer.
Because 50 overs is a long time but not unlimited, ODI batting is about pacing. Teams want a solid start, a steady middle phase where batters rotate the strike and spinners try to slow things down, and a strong finish in the last 10 overs. A batter who can anchor an innings for 30 or 40 overs is valuable, and so is a bowler who can deliver tight overs at the death.
When rain interrupts a limited-overs match, targets are reset using the Duckworth-Lewis-Stern (DLS) method, which takes into account both the overs and the wickets each team has left.
T20 cricket: the sprint
A T20 gives each side just 20 overs. The powerplay covers the first six overs, with only two fielders allowed outside the circle, and batting sides usually try to attack hard during that window. After that, up to five fielders can patrol the boundary.
With so few balls, every delivery matters. Batters take more risks, and power hitting, range of shots and strike rate become key skills. Bowlers have only four overs each, so captains think carefully about match-ups, using a particular bowler against a particular batter or saving their best death bowler for the final overs. Variations such as slower balls, yorkers and cutters are central to the format.
Fielding is just as important. A single dropped catch or a direct-hit run-out can swing a T20 game, which is one reason modern teams invest heavily in athletic fielders. The short length also makes the format easy to fit into an evening, which is why leagues such as the IPL schedule most matches at night under lights.
How the formats test players differently
Many top players perform across all three formats, but each one asks for a slightly different mix of skills.
- Batters: Test batting rewards technique, concentration and judgement of which balls to leave. ODI batting rewards pacing an innings. T20 batting rewards boundary hitting and the ability to score from the first ball.
- Fast bowlers: in Tests they bowl long spells aimed at taking wickets. In white-ball cricket they also need control, especially at the start and the end of an innings.
- Spinners: in Tests they often decide matches on wearing pitches late in the game. In ODIs and T20s they are frequently used in the middle overs to slow the scoring and take wickets when batters try to attack.
- Captains: Test captains manage bowlers' workloads over days and set fields to take wickets. White-ball captains make quicker tactical calls, rotating bowlers over by over.
Fitness demands differ too. A Test can mean fielding for well over a day, while T20 cricket asks for short bursts of maximum effort.
Why India plays all three so seriously
India's cricket calendar now mixes all three formats through the year. Home Test series against teams such as England and Australia carry huge prestige, the ODI World Cup is still seen as the biggest prize in the sport, and T20 cricket, both international and the IPL, draws the largest audiences.
The domestic structure reflects this. The Ranji Trophy is the main multi-day competition, the Vijay Hazare Trophy is the one-day tournament and the Syed Mushtaq Ali Trophy is the domestic T20 event. Young players often have to prove themselves across these competitions before they are picked for the national side.
Which format should a new fan watch first?
There is no wrong answer. T20 is the easiest starting point: matches are short, the action is constant and results are quick. ODIs add more strategy and give a feel for how an innings is built. Test cricket takes more time to follow, but many fans find it the most rewarding once they understand how a match can shift session by session.
A good way to learn is to watch one of each and notice how the same players change their approach. An opening batter who attacks the first over of a T20 might spend that same over in a Test leaving the ball alone. That contrast is the best illustration of how one sport can produce three very different contests.
Cricket formats FAQ
What is the difference between Test, ODI and T20 cricket?
The difference is time. A Test is scheduled for up to five days and each team bats twice. An ODI gives each side one innings of 50 overs, and a T20 gives each side one innings of 20 overs. The laws of the game are the same, but the time available changes how batters, bowlers and captains play.
How long does each cricket format take?
A Test can run for five days, with a minimum of about 90 overs a day split into three sessions. An ODI is settled in a single day. A T20 is usually over in about three and a half hours, which is why leagues such as the IPL schedule most matches in the evening.
Why can a Test match end in a draw?
To win a Test, a side has to bowl the opposition out twice and score more runs in total. If the scheduled time runs out before that happens, the match is drawn, however far ahead one team is. ODIs and T20s almost always produce a winner, with a Super Over used when scores are level.
How many overs can one bowler bowl?
There is no limit in a Test. In an ODI a bowler can bowl at most 10 overs, and in a T20 at most 4. That is why white-ball captains plan their bowling over by over and often save their best death bowler for the final overs.
Does the format matter if I follow cricket betting markets?
Yes. A Test has a draw as a possible result and conditions change over five days, while a T20 can swing on a single over, so results are harder to call in the shortest format. Our cricket betting guide explains the main markets for each format, and our cricket betting strategy guide covers staking and bankroll. Betting is for adults 18+ only, so only stake what you can afford to lose.
Summary
- Test: up to five days, two innings each, red ball, draws possible, built on patience and skill.
- ODI: 50 overs a side, white ball, three powerplay phases, a balance of building and attacking.
- T20: 20 overs a side, six-over powerplay, four overs per bowler, fast and high-risk.
Each format has its own rhythm, and together they make cricket one of the few sports that can be enjoyed over an evening or across a whole week.