The ball is a hard leather-seamed spheroid, with a circumference of 22.9 centimetres (9.0 in). The ball has a "seam": six rows of stitches attaching the leather shell of the ball to the string and cork interior. The seam on a new ball is prominent and helps the bowler propel it in a less predictable manner. During matches, the quality of the ball deteriorates to a point where it is no longer usable; during the course of this deterioration, its behaviour in flight will change and can influence the outcome of the match. Players will, therefore, attempt to modify the ball's behaviour by modifying its physical properties. Polishing the ball and wetting it with sweat or saliva is legal, even when the polishing is deliberately done on one side only to increase the ball's swing through the air, but the acts of rubbing other substances into the ball, scratching the surface or picking at the seam are illegal ball tampering.
As of 25 June 2019, India is ranked first in Tests, second in ODIs and fifth in T20Is by the ICC. Virat Kohli is the current captain of the team across all formats, while the head coach is Ravi Shastri. The Indian cricket team has rivalries with other Test-playing nations, most notably with Pakistan, the political arch-rival of India. However, in recent times, rivalries with nations like Australia, South Africa and England have also gained prominence.
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.
In England, a number of association football clubs owe their origins to cricketers who sought to play football as a means of keeping fit during the winter months. Derby County was founded as a branch of the Derbyshire County Cricket Club in 1884; Aston Villa (1874) and Everton (1876) were both founded by members of church cricket teams. Sheffield United's Bramall Lane ground was, from 1854, the home of the Sheffield Cricket Club, and then of Yorkshire; it was not used for football until 1862 and was shared by Yorkshire and Sheffield United from 1889 to 1973.
Additional runs can be gained by the batting team as extras (called "sundries" in Australia) due to errors made by the fielding side. This is achieved in four ways: no-ball, a penalty of one extra conceded by the bowler if he breaks the rules; wide, a penalty of one extra conceded by the bowler if he bowls so that the ball is out of the batsman's reach; bye, an extra awarded if the batsman misses the ball and it goes past the wicket-keeper and gives the batsmen time to run in the conventional way; leg bye, as for a bye except that the ball has hit the batsman's body, though not his bat. If the bowler has conceded a no-ball or a wide, his team incurs an additional penalty because that ball (i.e., delivery) has to be bowled again and hence the batting side has the opportunity to score more runs from this extra ball.
India's victory against the Australians in 2001 marked the beginning of a dream era for the team under the captainship of Sourav Ganguly, winning Test matches in Zimbabwe, Sri Lanka, West Indies and England. India also shared a joint victory with Sri Lanka in the ICC Championship, and went on to the finals in the 2003 Cricket World Cup only to be beaten by Australia.
In the approximate centre of the field is a rectangular pitch (see image, below) on which a wooden target called a wicket is sited at each end; the wickets are placed 22 yards (20 m) apart. The pitch is a flat surface 3 metres (9.8 ft) wide, with very short grass that tends to be worn away as the game progresses (cricket can also be played on artificial surfaces, notably matting). Each wicket is made of three wooden stumps topped by two bails.