Me and my playing opponent were both on the green, just 2-3 feet apart. I walked up to the green and marked 'my ball'. Unfortunately, we used the ball of same brand, his ball with a faint marking at one side which I couldn't identify when i marked the ball. When the opponent walked to the green, he assumed the other ball was his and marked it as well :)
He proceeded to putt and sank it into the hole! We applauded to his great putt.
Then it was my turn. When I placed the ball and saw the unfamiliar marking, I knew I'm screwed.
I didn't make the putt with his ball, but took over my ball from him, replace the ball from where he last putted. We both gladly took 2 penalty strokes each.
I unintentionally marked the wrong ball which inevitably made him putt the wrong ball. That said, I had not hit the wrong ball. What would u guys do, for discussion sake?
Cheers
