Why does T20 cricket have 20 overs?

KohakuT20 is played with 20 overs for each team. Aren't you curious why it is 20?

The answer in 30 seconds

Let me tell you what is known.

To finish a match in about 3 hours and bring in people who had not been coming. T20 began in 2003 as a domestic competition in England. No source could be found that explains why the number 20 itself was chosen.

Stadium floodlights and stands in an evening sky — An IPL venue in India with the floodlights on (the sky above the stands). T20 was born as a short match that can be held in the evening or at night.Photo: Kamalakanta777 / CC BY-SA 3.0 (cropped) / Wikimedia Commons

A way to win back spectators

T20 is a format in which each team plays 20 overs. It began in 2003 as a domestic competition in England. It was thought up by Stuart Robertson, the marketing head of the England and Wales Cricket Board (ECB). At that time, crowds at domestic matches were shrinking, and this was a worry.

KohakuSo it began with empty seats in the stands, I see.

Asking people who were not coming

Robertson's team looked into why the stands were empty. The people who were not coming were women, people aged 16 to 35, and families with young children. One reason was the time of the matches: people with jobs could not go to daytime games. So they asked, "Would you come to a match that takes less than 3 hours?" The answer was an overwhelming yes.

A match of about 3 hours

A 50-over match takes about 7 hours, a whole day. The middle of the innings also tended to be a dull stretch of singles. If that middle part were cut, the match would last about 3 hours and could be held on early evenings and weeknights. In 2001, representatives of the counties voted, and it was adopted by 11 votes to 7. No source was found that explains in detail why it is 20 overs, but the aim was a match of about 3 hours.

Figure: Match lengths compared

T20 spreads to India

T20 spread quickly. South Africa started a domestic competition in the winter of 2003, and Australia, Pakistan and Sri Lanka did so in 2005. India, which loved the 50-over game, also held a domestic T20 tournament in 2006. The first world event was held in South Africa in 2007, and India's win in it helped its popularity grow. The IPL began in 2008.

Want to know more?

The early T20 events were like funfairs, with speed dating, bouncy castles and karaoke around the match.
In 2004, more than 27,000 people came to a match at Lord's in London, the biggest crowd for a county match, apart from finals, in more than 50 years.
At the first competition, the two semi-finals and the final were played on one day, and the Trent Bridge ground was full of spectators.

KohakuT20 began by aiming for a match of about 3 hours. As for why the number is 20, I could not confirm that from the sources.

Quick quiz: test yourself

What was T20 created to achieve?

Show the answer

To finish matches even in rain
To lighten the bowlers' load
To finish in about 3 hours

To finish in about 3 hours The matches were made about 3 hours long so that people who had not been coming could watch.

Sources

The man behind Twenty20ESPNcricinfo
How a marketing stunt turned into a global phenomenonCricket Australia (cricket.com.au)
Crash, Bang, Wallop: How IPL Batting Has Changed Since 2008Wisden

This article was written after checking the sources above as of 2026-10-03. Explanations may change as research progresses. Photo credits are shown below each photo.