W2W4: Who will win the U.S. Open at Erin Hills?

ERIN, Wis. -- With nine golfers within 4 shots of Brian Harman's lead, who do our experts think will come out on top Sunday at Erin Hills? It's time to prognosticate.

You don't fire a 63, the 31st in major championship history, take down Johnny Miller's score to par U.S. Open record and not have a title to show for it come Sunday night. Give me Justin Thomas to win the 117th U.S. Open.
-- Matt Barrie

Justin Thomas will win his first major championship on Monday in a playoff against Brooks Koepka. Rickie Fowler will miss the playoff by 1 shot. I'm not gonna lie, as a lefty, I'm rooting for Brian Harman, but I'm nervous about a guy who's sleeping on the lead alone on Saturday night. Look for someone like Bill Haas to drop a low round and give guys something to shoot for Sunday.
-- Michael Collins

Rickie Fowler. After a tough second round, Fowler bounced back nicely with a 68 on Saturday and has put himself in excellent position to win his first major championship at the U.S. Open on Sunday. He's not leading, but he's lurking, and that might be the perfect position from which to make his move. Fowler is as accomplished as any player on the leaderboard, and he's determined to get one of the game's biggest trophies. It's right there for him now.
-- Bob Harig

Going out on a limb here, but Tommy Fleetwood. The Englishman has been unflappable this week, and he seemed extremely comfortable in his pairing on Saturday with Brooks Koepka, who he will play with again on Sunday in the final round. Fleetwood isn't a household name in the U.S., but he's a rising star on the European Tour.
-- Kevin Maguire

An 18-hole playoff. Nothing but contenders on the board who have never won a major, which tells me it's going to be awfully difficult for any of them to close this one out. I'll stick with Brooks Koepka as the man to beat. I'll take Koepka over Justin Thomas on Monday.
-- Ian O'Connor

Brian Harman plays with a chip on his shoulder. He has always felt that he hasn't gotten the respect he deserves -- and he's probably right. It's because he doesn't look like an outside linebacker and doesn't send the golf ball into orbit, like so many of his fellow pros. All he does is get the ball into the hole in a hurry, which is a pretty good way to win a U.S. Open. I think most people will expect him to fade on a leaderboard that includes more polished contenders, but I'll take Harman for the win. I like the guy with a chip on his shoulder.
-- Jason Sobel

I'm predicting someone implodes early, basically ejects from the competition, and we barely see him on television again. Normally, I'd be convinced it would be Brian Harman, the shortest hitter and least accomplished player among the leaders, but his iron play has been exceptional all week. Somehow, he'll keep it going and be in the mix. Instead, I suspect it's Tommy Fleetwood who buckles to U.S. Open pressure, and the winner is either Justin Thomas or Brooks Koepka.
-- Kevin Van Valkenburg

And in case anyone is wondering about which players shot 63 in major championship history, here's the full list:

Masters (2)
Nick Price, 1986, third round (9-under)
Greg Norman, 1996, first round (9-under)

U.S. Open (5)
Justin Thomas, 2017 (Erin Hills), third round (9-under)
Johnny Miller, 1973 (Oakmont CC), final round (8-under)*
Jack Nicklaus, 1980 (Baltusrol CC), first round (7-under)*
Tom Weiskopf, 1980 (Baltusrol CC), first round (7-under)
Vijay Singh, 2003 (Olympia Fields CC), second round (7-under)

The Open Championship (10)
Mark Hayes, 1977 (Turnberry), second round (7-under)
Isao Aoki, 1980 (Muirfield), third round (8-under)
Greg Norman, 1986 (Turnberry), second round (7-under)*
Paul Broadhurst, 1990 (St. Andrews), third round (9-under)
Jodie Mudd, 1991 (Birkdale), final round (7-under)
Nick Faldo, 1993 (St. George's), second round (7-under)
Payne Stewart, 1993 (St. George's), final round (7-under)
Rory McIlroy, 2010 (St. Andrews), first round (9-under)
Phil Mickelson, 2016 (Royal Troon), first round (8-under)
Henrik Stenson, 2016 (Royal Troon), final round (8-under)*

PGA Championship (14)
Bruce Crampton, 1975 (Firestone GC), second round (7-under)
Raymond Floyd, 1982 (Southern Hills CC), first round (7-under)*
Gary Player, 1984 (Shoal Creek), second round (9-under)
Vijay Singh, 1993 (Inverness Club), second round (8-under)
Michael Bradley, 1995 (Riviera CC), first round (8-under)
Brad Faxon, 1995 (Riviera CC), final round (8-under)
Jose Maria Olazabal, 2000 (Valhalla GC), third round (9-under)
Mark O'Meara, 2001 (Atlanta Athletic Club), second round (7-under)
Thomas Bjorn, 2005 (Baltusrol CC), third round (7-under)
Tiger Woods, 2007 (Southern Hills CC), second round (7-under)*
Steve Stricker, 2011 (Atlanta Athletic Club), first round (7-under)
Jason Dufner, 2013 (Oak Hill CC), second round (7-under)*
Hiroshi Iwata, 2015 (Whistling Straits), second round (9-under)
Robert Streb, 2016 (Baltusrol GC), second round (7-under)

* Went on to win