One great hole could give you great confidence, and that's it. But one bad hole could destroy your chances of winning.
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Tiger Woods' chance of winning his first major of the year came crumbling down on the sixth hole after shooting a triple-bogey.
His day hasn't gone so well, but there are others to talk about too. Here is an update on some of the stars of the event.
Adam Scott (-9)
Adam Scott hasn't needed to be incredibly sharp on Sunday given his lead. He hasn't performed up to his consistent standards in the tournament, but he still holds a comfortable lead.
Scott is at two-over par on the day after eight holes. He is four shots ahead of Graeme McDowell.
Graeme McDowell (-5)
McDowell hasn't been able to build off of his three-under 67 Saturday. A couple of bogeys, and McDowell's chances to make a comeback look bleak.
With only the back nine remaining, McDowell needs to start taking some chances.
Tiger Woods (-4)
After his triple-bogey on the sixth hole, Woods has been average. He recorded a birdie right after his triple-bogey, but then he recorded a bogey on the ninth hole.
With eight holes to play, Woods is now five strokes behind the leader.
Brandt Snedeker (-4)
Snedeker was the star of the tournament after two rounds. Since then, however, he's been the talk of the tournament in a negative way. After a 73 Saturday, Snedeker is currently shooting a three-over par on the day.
After appearing to be in perfect position to win a major after two rounds, Snedeker can't wait until the tournament finishes.
Luke Donald (-2)
Another major goes by and the world's best player fails to win. Luke Donald failed to make a move on Saturday, shooting a one-over par.
Donald has played decently well on Sunday, shooting one-under par on what has been a tough course today. But with his inability to close on Saturday, his efforts will be for naught in the win column.
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