I found this ball mark on the first green this morning. I was disappointed that a golfer would just leave their ball mark unrepaired, but we see it everyday, so I simply repaired it and you can't even tell it was ever there. The only thing more discouraging than an unrepaired ball mark is a ball mark repaired incorrectly. I say this because it's nearly impossible to fix a ball mark that has been repaired improperly. For example, in this picture below, someone attempted to repair a ball mark, but they lifted soil up into the center and now it will take weeks for grass to fill in. I could attempt to remove the soil and mend it properly, but it will never be as good a repair as if it would have been done properly the first time.
I can't stress this point enough, NEVER NEVER NEVER stick a tool into a putting green and push down on the tool's handle in such a way that soil comes to the surface like in this next picture.
Like with anything, there is a right way and a wrong way. Fixing a ball mark the right way is simple, but it's not so simple to show you how using pictures and text. That is why I made a short video for you to see just how easy it is. In fact, as you will see, it is so simple to fix a ball mark correctly that I was able to train my dog to do it. Click on the video below. To watch in full screen, click on the youtube button at the bottom of the video image.