What is T20 when referring to cricket?

Answer 1

Twenty20 CricketT20 refers to Twenty20 cricket, a form of cricket introduced to England in 2003. Each of the two teams plays a single innings, which consists of 20 overs (an over being a group of six legal deliveries). The first Twenty20 cricket match took place on June 13, 2003, and the first season saw the Twenty20 Cup, the England and Wales-organized competition, won by Surrey Lions.

While a Test match can take up to five consecutive days to play, and a One-Day match can take up to nine hours, a Twenty20 cricket match is generally completed within three hours - which is an advantage for the live crowds.