Hadwin tied a U.S. Open record when he made six straight birdies, from the 18th hole through the fifth hole.
Hideki Matsuyama had quite a day at Erin Hills.
It marked the first time since the world rankings were created in 1986 that the top three-ranked players in the world missed the cut at a US Open. "I can't put it any other way". It's not like I gave up.
He wasn't alone, though.
The biggest jolt of all, however, came watching World No 1 and defending champion Dustin Johnson, No 2 Rory McIlroy and No 3 Jason Day all trudge to the exit after failing to make the halfway cut, which fell at 1-over 145.
Stricker improved by a stroke even though Erin Hills showed a few more teeth than it had in Thursday's opening round.
On Thursday, 44 players broke par, erasing the previous first-round record of 39, set at Medinah in 1990.
The first round of the U.S. Open concluded with Rickie Fowler sitting atop the leaderboard. Na hit 11-of-14 fairways and reached 13-of-18 greens in regulation. It was surreal to watch.
South Korea's Si Woo Kim, who won the Players Championship in May, was a shot behind after covering the back nine in 34 and picking up a shot on the first. "And I just unfortunately didn't execute". He played particularly sloppy on the 14th hole, where he hit iron off the tee, then tried to lay up and, from the fairway, hooked it into the fescue, leading to a double bogey.
"I was upset with the score I had made, but it did not have any effect on my attitude or how I was going to then approach the rest of the round or the next shot".
"I couldn't get comfortable over the putter". "I didn't play that bad". "Just got to get off to a good, slow start, get conservative and kind of work my way into a solid round".
McIlroy will join Day at the US PGA Tour's Travelers Championship in CT next week."I saw some positives and hopefully I can take them to the Travelers", McIlroy, who has been sidelined a total of 10 weeks with a rib injury in 2017, said. The world's best amateur golfers - and tomorrow's golfing superstars - will be on full display through Sunday. So obviously I've got to do a little bit of practice tonight and try to get into it tomorrow and see how it goes.
Rory McIlroy is trying to make a run as he closes out his second round at the U.S Open. "That just wasn't the case today". If only he had hit the fairways. "But I hit it good enough to shoot a good score". Players noticed firmer greens that were allowing putts to race past the hole.
"It's just nice to go out and actually execute the game plan and not think about, "What if that one went in" or anything like that", Fowler said.
"He said 'The blimp is not looking good.' I guess it was nose down. So there's nothing for me to change other than dial things in on the greens".
Day and McIlroy never had much of a chance, both out of the picture before Johnson even teed off.
Rickie Fowler silenced Erin Hills critics by shooting a seven-under 65 to grab the first-round lead at the U.S. Open. Garcia, who shot a two-under 70, and Brooks Koepka, who shot a five-under 67, have the next best odds on the board at 15/1 and 12/1 respectively. The 2014 runner-up is just one-shot behind alongside Jamie Lovemark and JB Holmes.
All of two men in 30 years? That does not bode well.