Leader: -6 Daniel Brown
Selected: -5 Shane Lowry; -3 Justin Thomas
-2 Justin Rose, Xander Schauffele; -1 Matt Fitzpatrick, Brooks Koepka; Level Jordan Spieth, Scottie Scheffler
+7 Rory McIlroy; +8 Tiger Woods
Rory McIlroy finishes seven over after struggling with conditions
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Montojo -2 (1)
That is how to mark your major debut!
Spanish amateur Jaime Montojo holes from 132 yards on the par-four first for eagle, and jumps for joy appropriately.
Such is the low-scoring nature of the first day here at Royal Troon, it instantly gets him right up the leaderboard - he'll do very well to stay there.
Cantlay +1, Schauffele -1, Woods +2 (6)
Image source, PA MediaIt's a brute at 620 yards this sixth hole at Troon, but not yet the longest hole in Open history as the yardage today matches the 15th from Hoylake last year. The R&A will stretch it slightly to 623 yards though at some stage to claim that record.
Tiger Woods manages to make the long, undulating walk down the sixth and also gets his ball down and into the cup in the regulation five strokes for par.
Clark E, Koepka -2, Matsuyama +2 (7)
Image source, Getty ImagesFOUR birdies in a row for Brooks Koepka, who darts another approach within 10 feet and finds the cup with his first putt.
Wyndham Clark birdies the short par four too to get back to even for the day.
Fitzpatrick E, Lowry -1, Smith +4 (5)
Agonisingly close to another birdie for Shane Lowry, whose putt on five slides by the edge of the hole.
Cam Smith's up-and-down round continues with a bogey, while Matt Fitzpatrick registers a fifth straight par.
Jordan -1 (7)
Matthew Jordan's top-10 finish at his home course of Royal Liverpool was one of the stories of last year's Open.
He's started well again here at Royal Troon, with consecutive birdies on six and seven putting him one under.
Scheffler E, Spieth -1, Young +2 (4)
It's another great spinning little wedge in from Jordan Spieth from just about 50 yards on the fourth - leaving around six feet for a birdie.
But he misses! You could say that's Jordan Spieth in a nutshell...
Danger lurks all around at the Postage Stamp...
Ken Brown shows the 'postage stamp' eighth hole's deep bunker at Royal Troon golf course.
Fitzpatrick E, Lowry -1, Smith +3 (4)
Image source, Getty ImagesShane Lowry plays an excellent approach to the fourth green and sinks a 10-footer for a birdie that takes him into red numbers.
He's one of 16 players currently under par on day one.
Clark +1, Koepka -1, Matsuyama +2 (6)
After successive bogeys on two and three, Brooks Koepka has gone through holes four to six in three under par.
The American holes from about 25 feet for another birdie on the mega-long par five.
Image source, Getty ImagesThey've been playing at Royal Troon for more than nine hours - since Justin Leonard hit the first shot at 06:35 BST.
If you're just joining us, here's the story of day one so far - as told by our man on the scene Peter Scrivener.
Clarke +5 (8)
Darren Clarke, the 2011 Open champion, produces a touch of class on the Postage Stamp.
His tee shot lands about 10 feet past the cup and almost spins back in for a hole-in-one.
He has to make do with a two and, sadly, it's only enough to get him back to five over after a slow start - which included a triple-bogey seven on the second hole.
Cantlay E, Schauffele E, Woods +2 (5)
Image source, Getty ImagesA double-bogey five for Woods on the par three, but he's not actually played it that poorly!
His tee shot isn't too far off, but when it drops in the bunker it leaves no shot at all, so he has to stab it out away from the green, leaving a treacherous chip back over that same sand trap and onto the green.
It's a lovely effort as he opens the face of a wedge and slides it right underneath the ball getting maximum lift and landing softly leaving 10 feet for bogey.
The putt, though tracking, doesn't drop though and you have to say that's a touch unlucky.
Scheffler E, Spieth -1, Young +2 (3)
A nice approach from Scottie Scheffler on three leaves just six feet for a birdie, which he makes no mistake with to even out his card.
Jordan Spieth's approach is even better though, as he jams one in there nice and tight, only just over a foot away to guarantee his birdie three.
You're never quite sure what Spieth will dish up these days, but it's usually box office viewing - he was made for links golf.
Cantlay E, Schauffele E, Woods E (4)
The par-five fourth is a genuine three-shotter for Tiger Woods in this wind, and with 115 yards left for his third he plays a pretty average approach that leaves him all of 70 feet.
It's nominally a birdie putt but more a lag, which he can only get to seven feet and when that misses he drops back to level par.
Patrick Cantlay gets a bit of a bonus birdie as he manages to drain a 30-footer when in his mind would have been just get it within gimme range.
DeChambeau +5 (76)
Image source, Getty ImagesUS Open champion Bryson DeChambeau after he battled to a five-over 76 on day one: "It's a completely different test and something I'm not familiar with. I didn't get any practice in and I didn't really play much in the rain. I never grew up playing it - I can do it when it's warm and not windy.
"I'm going to go figure it out. It's something equipment related. I felt like I was swinging it somewhat OK - it's just the ball wasn't coming off in that window that I normally see, so it was a weird day.
"I'm proud of the way I persevered today. I could have thrown in the towel after nine but no, I've got a chance tomorrow. I'm excited for the challenge. If I have some putts go in and hit some shots the way I know how to and figure out this equipment stuff, I'll be good."
Clark E, Koepka E, Matsuyama +1 (5)
Brooks Koepka made his short birdie putt to get back to level par, but not such good news for Hideki Matsuyama, who misses his par putt from about five feet and drops a shot.
Fitzpatrick E, Lowry E, Smith +3 (3)
Bogey, triple bogey and now birdie for Cam Smith, who knocks in his birdie putt on the third from about 40 feet.
An eventful start for the 2022 Open champion.
MacIntyre +1 (72)
Image source, PA MediaBob MacIntyre, who backed up his win at the Scottish Open last week, with an opening round of one over par: "I thought the round of golf was close to perfect. The putter didn't turn up today but I thought tee to green was absolutely superb, especially that front nine.
"It's tough. The wind. I think a lot of guys had game plans to just drivers the first few few holes and pitch up there today. When it's straight back into the wind, it switches you back into fighting and it's difficult."
On the support he received from the crowd: "It was incredible. I can't thank people enough. What I did last week was massive for that."
Clark E, Koepka +1, Matsuyama E (4)
Oh, Brooks Koepka - that's magical!
His tee shot on the par three gets a helpful bounce and settles about 18 inches from the cup.
Surely a birdie incoming.
Woods -1, Schauffele E, Cantlay +1 (4)
Dan Rapaport
American golf journalist on BBC Radio 5 Live
It’s started almost perfectly for Tiger Woods. The difficulty will be keeping this level of play through the rest of the day. He’s controlling his ball really nicely, he looks like he’s moving decently well.
He is looking noticeably leaner, his swing is really well balanced but it is a question of whether it will hold up for 72 holes - or even 18 holes.