The US Open held its share of surprises and expected performances, but no performance was more unexpected than Beau Hossler's amateur prowess.
The 17-year-old wasn't the only one. Webb Simpson and Michael Thompson delivered unlikely top-shelf finishes.
Let's take a look at the most intriguing performances from this year's US Open.
Hossler played like anything but an amateur in this year's US Open. He finished nine-over par, but he was just three-over the mark heading into Sunday's action.
He displayed incredible poise for a teenager. He was collected on the course and throughout the constant flow of interviews being reaped upon him.
Watching this youngster contend with the "big boys" was worth the spectacle of the entire tournament.
He struggled through Round 4, but shooting a 70 in Rounds 1 and 3 is nothing to be ashamed of.
You can rest assured, better days are ahead for Hossler.
Thompson finished, what seemed like hours, before the rest of the US Open field. While he was sitting in the clubhouse, Simpson rallied and Graeme McDowell tied him for second place.
But that wasn't before Thompson turned in an excellent four-round performance at the Olympic Club.
In Round 1, he shot a 66. He shot a 67 in Round 4. If it weren't for two mediocre middle rounds, we would be hailing him as this year's champion.
Thompson only has two PGA Tour wins, so this came as quite a surprise. His biggest claim to fame is earning 2010 Player of the Year honors on the Hooters Tour.
He led through Round 1, but tailed off on Friday and Saturday. Either way, Thompson gave spectators something worth watching this weekend.
Simpson's victory was the most intriguing of them all. He has only been a PGA Tour member for four years, and this was his first major victory.
Not only did Simpson win, but he chased down a much more experienced golfer in the tournament's pressure-packed moments. Jim Furyk won the US Open in 2003, but that didn't stop Simpson from staying steady when it counted.
He played an excellent Round 4, and he made every timely shot. Sure, a bit of luck could have gone into it, but when doesn't it?
Simpson's victory sets the stage for the British Open. He will have a chance to take the mantle as golf's "next big thing" but only if he performs like he did at the Olympic Club these past four days.