This is like a trick shot gone wrong.
During the second round of the Humana Challenge, Zach Johnson was trying to hit a shot off of the rocks. The results were, well, not good.
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To make matters worse for Johnson, not only did his ball go backwards but it went into the water. He ended up with a double bogey on the hole.
He did make up for it a bit later on by holing out from bunker on the 12th hole.