Played 18 holes and decided to go back out on the back nine. Previously on the hole, I carried driver 301yds on the par 4 17th green long. The second time around my friend says "You have to hole this to win the Masters come on." I hit it and its a lower ball flight than the first with more draw spin and he starts saying "its good dude, its good!" We see it roll up the green but then disappear, which at that point I thought it went past the green. I get up to the green and I don't see the ball in sight and run up to the hole for some reason and its there in the cup!!