The Pakistan spot-fixing case

In September 2010 the ICC suspended three Pakistan players - Mohammad Amir, Mohammad Asif and Salman Butt - on allegations of what was later defined as spot-fixing. They were alleged to have carried out specific on-field actions, including bowling no-balls at pre-determined times, during the Lord's Test against England on the instance of a bookie. The three were later handed long bans by the ICC before the matter moved to the British Crown courts, where all three were convicted and sentenced to spells of detention.

Jun 20, 2016: 'The dream is to come back and play for three to four years' | Aug 19, 2015: Bazid: Trio's return would be unfair to the rest

New Zealand's captaincy controversy

Ross Taylor led New Zealand to their first Test victory over Sri Lanka in over a dozen years in December 2012, but he then stepped down from the captaincy, opted out of the tour of South Africa, and Brendon McCullum was appointed his successor. Taylor countered claims by New Zealand Cricket that he had refused to accept a two-way split of the captaincy with McCullum, and said the coach, Mike Hesson, had questioned his leadership and said he would ask the board to replace him.

Jun 15, 2016: 'The captaincy came a couple of years before I was ready' | Apr 24, 2013: The apology episode

Sledging

From WG Grace, with his penchant for delivering a running commentary on opposition players and umpires, to Steve Waugh's Australians and their tactic of "mental disintegration", sledging is almost as old as cricket itself. The Australians, from Dennis Lillee to Merv Hughes have been the acknowledged masters, but Asian exponents like Kumar Sangakkara are fast catching up

Feb 24, 2016: 'We've tried to hold up a mirror to grade cricket and see how people react' | Mar 21, 2016: Does sledging drive people away from the recreational game?

Cricket rules

Cricket has never stopped evolving: from round-arm bowling becoming the standard, to the 15-degree rule for arm flexion while bowling. From the number of balls per over to the specifications of equipment - ranging from glove-webbing to bat handles - almost every aspect of the game is regulated. New rules are frequently put in place - especially in the shorter forms of the game, as in the case of Powerplays, free hits, and the tweaking of field restrictions.

Feb 21, 2016: Bring back the back-foot no-ball law | Sep 30, 2015: MCC revises fielder movement Law

The future of ODIs

The growth of Twenty20 cricket has raised serious questions over the utility of the 50-over game, and concerns for its future. Though it is still the currency of the two main ICC tournaments, some boards have already shortened their domestic format. Suggestions for change have been plenty and even the ICC is thinking about tweaking the format.

Feb 8, 2016: Why the good-length ball has lost its sting | Feb 18, 2016: ODIs: less is more

Chucking

Controversy over illegitimate bowling actions - a burning issue in the 1950s - flared up again in the mid-to-late-1990s after Muttiah Muralitharan was no-balled repeatedly in Australia. Since then a number of bowlers (Shoaib Akhtar, Shoaib Malik, Harbhajan Singh and Jermaine Lawson prominent among them) have undergone remedial work after having their actions reported.

Jan 19, 2016: Engelbrecht's reworked action deemed legal | Feb 7, 2015: 'If circumstances arise, will be ready for World Cup' - Ajmal