As I was watching Jordan Spieth's collapse at the Masters yesterday, I was reminded why the game of golf is so fickle.  He could do no wrong on the front 9, cruising along with a smooth 32.  Then comes #10, #11, and #12.  He went from invincible to vulnerable in a matter of 45 minutes.  Golf is strange that way.  One minute your on top of your game and the next thing you know your putting for a 7 on a par 3.  My biggest collapse came in my PGA playing ability test.  I took 4 unplayable lies in 2 rounds.  2 ROUNDS!  I missed my target score by 1 shot!  Which leads me to ask, what is your biggest collapse in a round of golf?  Please share your story