1. Why players using sand paper are banned, while those using towels are not punished at all?
2. Why three Australian batsmen were banned for ball tampering, when they didn't bowled a single ball during the entire innings? Are you saying that these three players are more guilty when compared to the bowlers who delivered those balls?
Players using towel to keep the ball dry especially in humid condition so its justified to use as long as they are not tapering the balls but why using sand paper at the ground,just to cheat right that is why they got banned.
One who get caught of their illegal actions will be punished,bowlers may argue that they are not aware of it so its not possible to punish every player.