The International Cricket Council (ICC) released a new set of playing conditions that govern cricket
1. A player can be sent off for level four offences.
2. An appeal can be withdrawn, or the umpires can recall a dismissed batsman, at any time before the ball comes into play for the next delivery. Previously, a batsman could not be recalled once he/she had left the field.
3. A batsman can be caught, run-out, or stumped even if the ball makes contact with a helmet worn by the fielder or wicketkeeper. This is a welcome change given that most wicketkeepers now wear helmets for safety reasons.
4. If an umpire’s decision is referred to the TV umpire by a team, and the on-field decision remains unchanged because the Decision Review System (DRS) shows “umpire’s call”, the team will not lose the review. This is also a good innovation that makes the DRS fairer. Because teams will not lose a review for “umpire’s call”, they will not have their two unsuccessful reviews replenished after the first 80 overs of the innings in a Test. They will have only two unsuccessful reviews for the entire innings.
5. If a batsman grounds his/her bat or part of his/her body behind the crease while regaining his/her ground before the stumps are broken, and then if he/she inadvertently loses contact with the bat, or if the grounded part of his/her body becomes airborne – while running or diving – when the stumps are broken, he/she shall not be run out or stumped.
6. The permitted size of the bat is now defined, with the width and length unchanged, but with added restrictions on the thickness of the edges (40mm) and the overall depth (67mm). Umpires will be issued with a new bat gauge, which they can use to check a bat’s legality.
7. Some of the other rule changes address fielding teams’ attempts to distract batsmen with mock fielding, rules regarding counting of byes off no balls, and boundary catching / saving rules. Also teams now have the luxury of 6 substitutes instead of four during test matches.