A little bit over a year since the bans for the Cape Town ball-tampering incident ended, cricket is thinking about ways to legitimately use artificial substances to shine the ball, in response to concerns that in the post-Covid-19 world, saliva might not be the safest way to go. Here's a look at seven instances - before the Newlands saga - when cricketers confessed to ball tampering, often by methods more vicious than the use of sandpaper.