Ball on back of green not mine?

Ball on back of green not mine?

Munising Michigan 6/18/18 @picturerocksglofclub 8th hole 155yd par 3 Misty, foggy, 48° into 2 club wind, used 3 hybrid. Hit it slightly thin straight at the green, seen it and a hop but couldn't see it anymore after that. When we got to the green there was a ball on the back Edge my partner's ball was slightly off the green, as I looked at the ball on the back Edge I said to my partner this is not my ball I went and looked around thinking my ball went out the back door didn't see anything and I looked in the hole there was a ball in there, and it was mine, we could see the trail on the green going to the hole. Witness Edward Meyer.