BBC TV coverage of the USPGA Championship starts right now - on the red button, online and on iPlayer. You can watch at the top of this page.

Coverage times

(All times BST)

Thursday 10 August

18:00-00:15 - BBC Red Button, BBC Sport website, BBC iPlayer

23:05-00:15 - BBC Two

22:00-01:00 - Radio 5 live sports extra

More details here

Japanese sensation Hideki Matsuyama comes into the Championship in red hot form. The world number three carded a nine-under-par 61 to win the Bridgestone Invitational by five shots in Ohio.

Matsuyama, 25, who started two shots behind Zach Johnson and Thomas Pieters, sunk an eagle and seven birdies to equal thecourse record at Akron.

Victory continues a fine run of form for Matsuyama since the end of last year. This was his sixth win in his past 20 starts - during which time he has also managed four top-five finishes and five more top-25 placings.

He started at the 10th and birdied his first two holes but three consecutive bogeys on his back nine leave him at one over with two to play.

Image source, Getty Images

Casey made three birdies in his first five holes to take the early lead but has not had one since and is one under for the Championship after 14.

Image source, Getty Images

Andrew Neill: Could do with Casey getting another birdie before he finishes. Otherwise in great shape. Looking forward to watching Rory later!!!

The stocky figure of Gary Woodland rolls in a birdie from five feet at the 15th and he shares the lead again at four under with Jim Herman.

Image source, EPA

Poor old Ernie has had a third double bogey and Els is now nine over, only three places off the foot of the leaderboard.

BBC TV coverage on the red button, online and iPlayer starts at 18:00 BST.

It is indeed another dropped shot for Spieth and he has seen four shots dwindle away in the last nine. Sergio comes closes to another birdie, his 25-foot effort brushes the left edge of the cup but fails to drop and he stays plus four.

I do love the apex calculator on the ball tracking and I'm looking forward to seeing how high Rory takes it later. Spieth's tee shot is measured at 117 feet at the 259-yard par three but he doesn't like it and it is short of the dance floor. He takes the putter but it has raced eight feet by so another shot could go.

Another one goes for The Open champion though. Jordan Spieth barely touched that putt from eight feet and it drifts agonisingly to the left of the cup. It's a birdie for playing partner Brooks Koepka though, rolling one in from 15 feet, and the US Open winner is back to one under with four holes to play.

Image source, EPA

* indicates a 10th tee start

-3 Woodland (14); Herman (14); Murray (17)

-2 Finau (16); Kang (15); Olesen (11)

-1 Fleetwood (15*); Casey (8*); ; Wood (9*); Westwood (6*)

E ; Koepka (13*); D. Johnson (12*)

+1 Spieth (13*); Bradley (11*); Matsuyama (16*)

Selected others

+3 Poulter (16*); +4 Stenson (12*); +5 Garcia (13*); +5 Pieters (13); -8 Watson (14*)

What a putt from the Masters champion with that claw grip. It looked as though it was going to run out of gas but it just dropped into the cup from around 25 feet and his third birdie of the day gets him back to four over.

A third American shares the lead at three under as world number 91 Grayson Murray birdies the 17th to join Woodland and Herman.

Image source, Getty Images

A lot of people will be keen to know how the Beef is getting on. I'm not sure how many of those cries we will hear, I hope not too many because I find them rather tiresome myself, same as the Root ones for the England cricket captain, but the big fella Andrew 'Beef' Johnston has just collected his first birdie of the day. It was timely as he made a double bogey at his second and was three over after his first four.

Image source, Reuters

Sergio's all in black (or is it dark navy?) today and it's a fairly sombre tale thus far, with those six shots going in four holes. His tee shot at the par three fourth plummeted into the bunker but a delightful splash out was sent close to the flag and he holed out from three feet to remain five over.

Image source, EPA

Image source, Getty Images

You'll be able to listen to commentary of today's play on BBC Radio 5 live sports extra from 22:00 BST.

Ahead of the tournament presenter Will Perry, BBC golf corespondent Iain Carter and 2003 US PGA champion Shaun Micheel discussed Jordan Spieth's chances of completing the career Grand Slam and more in our podcast.

You'll also hear from Speith himself and Rory McIlroy.

Give it a listen here.

BBC Radio 5 live's Iain Carter and Will Perry are among the team providing updates and gave their thoughts on the 2017 Championship on the drive to Quail Hollow.

There are four Englishmen in a share of fourth now two shots off the lead, Chris Wood, Tommy Fleetwood, Paul Casey and Lee Westwood.

Image source, EPA

These greens look difficult. The course is pretty wet but a lot of work has gone into drying out the putting surfaces which has made for some quick putts.

Jordan Spieth has another on the third, his 12th hole of the day, but the ball just stays wide of the right-side of the cup. That was lengthy but make-able.

The American mops up the par putt to stay one over.

A certain US Olympic swimming legend has been spotted out on the course following his compatriot Jordan Spieth today...