The U.S. Open is the second major of the golf year and is trademarked as "Golf's Toughest Test."
Most of the time it fits the bill as such, frustrating elite players since nothing ever turns out the way anyone expects.
Players make their plans on how to survive the course, but hardly anything goes according to plan.
Last year Rory McIlroy defied all reasoning and destroyed 11 tournament records on his way to winning his first career major title in a runaway.
This year he comes into the tournament off some of his worst career performances, but maybe the familiar setting could help him get back on track.
Three-time champ Tiger Woods is back to being relevant again. He has won twice already this year and is the odds-on favorite to win the tournament. All eyes are on him as he tries to inch closer to Jack Nicklaus' all-time major record.
Luke Donald and Lee Westwood, ranked No. 1 and No. 3 in the world respectively, are recognized as two of the best players to never have won a Major. They come into the tournament playing at their best and poised to leave that recognition behind.
There are some other players that are not getting as much buzz as the top elite players on the field. And in a tournament where surprises are bound to happen, we must also pay attention to them.
Lucas Glover was the last surprise winner of the event in 2009. He was ranked 71st in the world when he won and had never made the cut in his three previous U.S. Open appearances.
Let's take a look at some of those possible surprises to win this year's U.S. Open.