Yeah breaking the unwritten rules of the game, like not often seen is basketballers under-arming free-throws. It's unsporting, not even Michael Jordan did it (ooff, he took that personally...).
Under-arming was done in modern international cricket once and ruined sporting careers.
As it should... 40 years later and we're still talking about it.
Rolling the ball along the ground when a six was required to win made what was an exciting game into a farce. You want your team to win, but not like that. You have to question whether there wa some money put down on the side...
Same can be said for the batsman who walks. It's the right decision when you consider you want to win with no doubt as to the validity of the result. Maybe if sponsors required sportsmanship as part of their contracts you might see less of ball tampering and other dubious practices in the name of winning.
Under-arming was done in modern international cricket once and ruined sporting careers.