In match play my opponent hits a shot that lands and makes a ball mark 1" from the hole. Since my ball is farther from the hole than his, I am away. As he goes to repair his ball mark, I ask him not to, as I want to use the ball mark to deflect the ball into the hole, if I am off line. This is permissible in match play. See 16-1c/3.
Because there is no mention of this scenario anywhere under stroke play, am I correct in assuming that this cannot be done?