The 19th century saw underarm bowling superseded by first roundarm and then overarm bowling. Both developments were controversial. Organisation of the game at county level led to the creation of the county clubs, starting with Sussex in 1839. In December 1889, the eight leading county clubs formed the official County Championship, which began in 1890.
Off the field in televised matches, there is usually a third umpire who can make decisions on certain incidents with the aid of video evidence. The third umpire is mandatory under the playing conditions for Test and Limited Overs International matches played between two ICC full member countries. These matches also have a match referee whose job is to ensure that play is within the Laws and the spirit of the game.
The game underwent major development in the 18th century to become England's national sport. Its success was underwritten by the twin necessities of patronage and betting. Cricket was prominent in London as early as 1707 and, in the middle years of the century, large crowds flocked to matches on the Artillery Ground in Finsbury. The single wicket form of the sport attracted huge crowds and wagers to match, its popularity peaking in the 1748 season. Bowling underwent an evolution around 1760 when bowlers began to pitch the ball instead of rolling or skimming it towards the batsman. This caused a revolution in bat design because, to deal with the bouncing ball, it was necessary to introduce the modern straight bat in place of the old "hockey stick" shape.
Male crickets establish their dominance over each other by aggression. They start by lashing each other with their antennae and flaring their mandibles. Unless one retreats at this stage, they resort to grappling, at the same time each emitting calls that are quite unlike those uttered in other circumstances. When one achieves dominance, it sings loudly, while the loser remains silent.
Other defensive strategies are the use of camouflage, fleeing, and aggression. Some species have adopted colourings, shapes, and patterns that make it difficult for predators that hunt by sight to detect them. They tend to be dull shades of brown, grey, and green that blend into their background, and desert species tend to be pale. Some species can fly, but the mode of flight tends to be clumsy, so the most usual response to danger is to scuttle away to find a hiding place.
Subject to certain variations, on-field clothing generally includes a collared shirt with short or long sleeves; long trousers; woolen pullover (if needed); cricket cap (for fielding) or a safety helmet; and spiked shoes or boots to increase traction. The kit is traditionally all white and this remains the case in Test and first-class cricket but, in limited overs cricket, team colours are worn instead.