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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Hojgaard -2 (4)
Finally, Younghan Song has company at the top of the pile as Denmark's Nicolai Hojgaard gets his second birdie of the day.
Earlier it was a spectacular chip - this one is more conventional as he tidies up from eight feet.
Wallace -1 (2)
As one Englishman reaches the tee box on the first hole, another one gets his round going on the second green.
Four-time DP World Tour winner Matt Wallace buries a terrific putt from fully 30 feet and he joins the crowd at one under.
Daly, De la Fuente, Rai (08:36 BST)
Image source, Getty ImagesEngland's Aaron Rai has been in exceptional form leading into The Open.
He has registered five top-10 finishes on the PGA Tour in 2024, including in all of his past three outings.
Fourth place at last week's Scottish Open proved enough to book his place at Royal Troon.
He's about to head out alongside 1995 Open champion John Daly.
Im -1, Thomas -1 (3)
Another PGA star joins the crowd at one under par, and again it's in tasty fashion as South Korea's Sungjae Im sinks a nonchalant chip from off the back of the third green.
He joins playing partner Justin Thomas at one off the lead, still held by Im's compatriot Younghan Song.
Rose -1 (3)
A first par-five of the day for Justin Rose and it's brutishly long at 604 yards.
Still, these guys aren't too troubled by distance and he's connected beautifully with his three wood, swooping his shot 280 yards down the fairway.
Par fives on the front nine are a chance to put the foot down.
Many of the biggest names are yet to start their quests but even so it's a tidy top of the leaderboard already here at Royal Troon.
The rain has stopped and the soft greens it's left behind could be liable for some nice scoring conditions.
Rose -1 (3)
As predicted, Justin Rose taps it in.
Good start for the 2016 Olympic champion.
Peter Scrivener
BBC Sport at Royal Troon
Image source, ReutersR&A chief executive Martin Slumbers says he "doesn't care" that the Open Championship prize fund is not among the top 25 in men's professional golf.
Earlier this week, the R&A announced minimal increases to prize money for the 152nd Open at Royal Troon, amid "concern" about the impact on financial sustainability and the perception of men's professional golf.
The winner this week will receive a record $3.1m (£2.38m) - an increase of $100,000 on last year.
By comparison, Bryson DeChambeau earned $4.3m for winning last month's US Open, and Scottie Scheffler's second Masters victory in April came with a $3.6m prize.
Their fellow American Xander Schauffele collected $3.3m for winning the US PGA Championship in May.
The total Open prize fund of $17m (£13.1m) is a $500,000 increase on last year but is less than the other three majors, 12 PGA Tour events and all 14 LIV Golf events.
"A) I didn't know, and b) I don't care," said Slumbers, who steps down from his role in November, when told where The Open ranks in terms of prize money on offer.
"While we will always offer a very competitive prize fund for The Open, our wider focus is on increasing participation and improving pathways in golf.
"We have to make choices about how we allocate resources and make the resources we have go as far as they can. Our responsibility is to ensure the game is thriving 50 years from now."
Rose E (2)
As one Justin makes birdie on two, another Justin lines up an almost kick-in opportunity at the second.
A delicious wedge from Rose skips onto the green and hangs up three feet from the hole.
Back shortly to confirm if he gets into the red.
Thomas -1 (2)
Atta' boy Justin Thomas.
A disappointing second shot leaves him in the run-off to the right of the green but he's found his short-game touch once again and fizzes a one-bounce chip slap into the hole.
He's got a spring in his step as he acknowledges the applause.
Peter Scrivener
BBC Sport at Royal Troon
Image source, Getty ImagesThe cloudburst that hit Royal Troon around 30 minutes ago seems to have blown over but it's going to be one of those days where the umbrella is going to be up and down and the waterproofs on and off.
Rose E (2)
Image source, Getty ImagesHis card says two pars but Justin Rose has flirted with making progress so far this morning.
He's just watched a long-range birdie putt scoot inches from the hole and deny him a share of second place.
A nice reaction from Rose as he sinks to his knees in disbelief.
Out braving the elements this morning are Simon and Natalie from South Yorkshire, who are just up for the day and have been speaking to BBC Radio 5 Live reporter James Gregg.
"I’d like to see Rory win but I think Robert MacIntyre may have a good push after his win last week," says Simon, who is at his first golf event.
"I’m going to follow JT (Justin Thomas) for the first few holes then drop back to see Tommy Fleetwood. I’ll be dropping back to see Rory, then this afternoon once Tiger Woods tees off, my idol, I’ll be following him for the rest of the day."
Follow updates on BBC Radio 5 Live for the next couple of hours, until full live commentary kicks in at 10:00.
Hojgaard -1 (2)
There's more than one way to play golf and it's always fun to take the scenic route to a birdie.
Team Europe's Nicolai Hojgaard has just danced in his chip from off the left side of the second green to move into the red.
The crowd enjoyed that.
All times BST
Image source, Getty ImagesHere's who we have on the slate this morning:
This afternoon's wave has another clutch of top names for us to enjoy.
Thomas E (07:52 BST)
We saw the best of Justin Thomas on day one of the Scottish Open as he raced round the Renaissance Club in a stunning round of eight under par.
His challenge fell away over the weekend and he's disappointed with his second at the first here as it lands short of the pin and makes a birdie unlikely.
Rose E, Molinari -1 (1)
A tremendous shot out of the fescue hands Justin Rose a nine-foot putt to get his Open challenge off to the perfect start - but he's missed it and will have to settle for par.
It's a better result for 2018 champion Francesco Molinari who rolls in from 12 feet to move into the red.
We were expecting the opening holes to provide the best birdie chances but it's not been thus so far for many of the early starters.
In saying that, South Korea's Younghan Song has got off to a flyer. He's two under through three holes.
Stubbs (07:41)
Peter Scrivener
BBC Sport at Royal Troon
Australian amateur Jasper Stubbs is playing in his second major. Perhaps a touch of nerves on the first tee as he squirts his opener perilously close to the rickety fence that separates the course from the beach. It's over. A re-load for the 22-year-old, who missed the cut at the Masters in April. That's better. Down the middle.
But before he can play his fourth shot, the umbrellas shoot up. The forecast rain has arrived. And then some. We're getting a real soaking here.
Im, Southgate, Thomas (07:52 BST)
Image source, ReutersJustin Thomas has achieved plenty in his golfing career, including two major wins, but he will want to improve on his previous results at The Open at Royal Troon this week.
He has made the cut on four of his seven previous appearances, with a highest finish of tied-11th at Royal Portrush in 2019.
Last year's trip to Royal Liverpool was memorable for the wrong reasons as he shot 11 over par for the first round.