For the second time today, Bale is hauled over by an American defender in a cynical manner. Acosta brings down his club-mate by the halfway line and receives a deserved booking.
90' +8
It remains all-action, with both sides relentless in their commitment to the cause, and several men on either team are clearly only running on fumes now. Can anyone find a late, late winner as we approach the 100th minute?
90' +6
Quite awkwardly, Hennessey opts to punch clear a Yedlin cross from the right under little pressure, but it gets the ball sufficiently clear to quell the immediate danger.
90' +5
J. Morrell enters the game and replaces E. Ampadu.
Morrell is thrown on for the closing stages; a limping Ampadu makes his way to the touchline. It seems the latter has been afflicted by cramp.
90' +3
S. Thomas enters the game and replaces H. Wilson.
Having failed to fully recover from his injury, Wilson is replaced by Thomas for the final few minutes of the game.
90' +2
The US pressure continues to build, as Adams has a 25-yard drive charged down at close range, then Ampadu makes a crunching challenge on Zimmerman. It's quite a conclusion in store for us in Al Rayyan - seven minutes of stoppage-time remain!
90'
Wilson is now down injured, after he somehow escapes censure for a foul on Aaronson in midfield. Again, the referee makes a curious decision not to issue a booking.
89'
SAVE! Though the fresh-legged Johnson escapes from a tiring Adams on the right, and then breaks into the box, his low shot is directed straight at Turner, who makes a regulation save at the near post!
88'
J. Morris enters the game and replaces T. Weah.
A final roll of the dice by Berhalter sees Morris replace opening goalscorer Weah up front.
Minute
Description
86'
The US have been stirred into action since being hauled level, and they are now favouring a more direct approach themselves. Wales, though, are quite comfortable in defending crosses from deep and make several headed clearances in succession.
82'
Penalty goal scored by G. Bale for Wales!
WALES EQUALISE!!! Bale bails Cymru out again! After winning the penalty himself, Wales' veteran skipper steps up to handle the pressure and drives his spot-kick into the top of the net via fingertip from Turner. It was a brave effort to keep the ball out, but Bale applied too much power! It's 1-1!
80'
Weah is able to return to the fray, as the clock ticks down to 10 minutes plus stoppage-time for the USA to see out the win. Can they hold on?
79'
B. Johnson enters the game and replaces N. Williams.
A break in play while Weah is down injured allows Wales to make another substitution: full-back Williams is replaced by a forward, Johnson.
77'
From the USA's fifth corner of the match, Pulisic slings over a deep ball to the back post, which Aaronson meets with a header that flies well wide of the right-hand post.
75'
K. Acosta enters the game and replaces Y. Musah.
A third US change, and their fourth overall, sees Musah replaced by Acosta in midfield.
74'
H. Wright enters the game and replaces J. Sargent.
D. Yedlin enters the game and replaces S. Dest.
Far quieter in the second half, Sargent comes off too. Wright is introduced up front.
Another player to have received a yellow card during the first half is withdrawn by Berhalter: Dest is replaced by the experienced Yedlin at right-back.
72'
After a brief medical assessment, Pulisic is passed fit to return and the game goes on.
71'
Following a rugged challenge from Mepham - who has already been booked - on Pulisic in midfield, the US forward has been struggling to move freely. He now falls to the ground and signals for medical attention. That break allows both sides to take on some drinks.
70'
At the near post, Moore authoritatively heads away Pulisic's corner from the right, as Williams rejoins the fray following his back injury.
68'
Caught by Weah with a knee to his lower back, Williams is down on the turf writhing around in pain. As a result, the action comes to a temporary halt.
66'
B. Aaronson enters the game and replaces W. McKennie.
Booked during the first half, McKennie is replaced by Aaronson in the USA midfield.
61'
Finally, the US take an opportunity to move several yards up the field, having spent most of the past 10 minutes inside their own defensive third. That will allow them to take a breather and recover their focus.
59'
A dangerous inswinging cross from the right by Roberts drifts just wide of the far post, with Bale lurking nearby. The US are starting to look uncomfortable dealing with this more direct threat from their opponents.
57'
Moore's presence earns a throw-in high up on the right flank, and Roberts then hurls the ball into the box with all his might. Robinson just gets his head to it first, and eventually Wales lose possession; conceding a free-kick.
55'
A chance to break rapidly is spurned by Pulisic, who for once lacks support in the opposition half and checks back inside; conceding possession to a re-energised Welsh team.
53'
Without doubt, the change of approach from Wales has given the US more to think about defensively, and as a consequence their incredibly high line of the first half has dropped back significantly.
51'
T. Ream gets yellow.
As Bale threatens to sprint clear from the halfway line, Ream tugs the Wales captain back and then accepts his consequent booking.
50'
Under severe pressure from Bale and Moore inside his six-yard box, Turner spills an inswinging cross from Wales' corner, but the referee then spares him by blowing up for a foul.
48'
The US have resumed their rapid closing down of the first half, with the tireless Adams being penalised for a slightly mistimed challenge in midfield.
46'
K. Moore enters the game and replaces D. James.
Not surprisingly, Page has opted to make a half-time change: James' departure for Moore signals a more direct approach in the second half.
Wales kick off, and we are back under way in Al Rayyan!
45' +4
HALF-TIME: USA 1-0 WALES
45' +3
C. Mepham gets yellow.
45' +2
Rather desperately, Mepham twice grabs a handful of Pulisic's shirt and pulls the US forward back. That results in another booking - the fourth of this half.
In the second of four additional minutes before the break, a sprightly US team look like they don't want half-time to come; they're energised by their excellent showing so far and sense their opponents are reeling.
45'
Wilson's corner from the right is swung dangerously into the heart of the area, but Davies' header is then steered wide of the target under significant pressure.
44'
A perfectly-timed intervention from Robinson denies Ramsey a rare chance to break into the box from the right; conceding a corner. Can Wales make the most of this set-piece opportunity?
42'
The US have not been sated by their opening goal, and they are still totally dominant in this first half. They've moved the ball at pace and Wales have put up no real response so far.
40'
G. Bale gets yellow.
For a clear foul on Musah in midfield, Bale is shown a yellow card by the referee - that's Wales' first booking today.
36'
T. Weah has scored a goal for United States! Assist by C. Pulišić.
Receiving the ball just outside the centre circle, Pulisic picks up the ball in space and guides a precise low throughball towards Weah's run through the centre.
USA LEAD! It's been coming! Sargent and Pulisic combine quickly just inside the Wales half, and the latter loses little time in spotting space to thread a low ball through to Weah. The US striker latches onto the ball with glee just outside the box, and takes just one strides before sliding the ball home past Hennessey to open the scoring! USA 1-0 WALES!
35'
Intense US pressure continues to mount, and a searching ball from Adams towards the back post almost reaches the outstretched boot of Weah, who arrives late from the right-hand side.
33'
Starved of the ball, pure frustration leads Mepham to shoulder-barge Pulisic over in central midfield, and the referee surprisingly declines to book the Welsh defender. That seemed to be a clear-cut decision.
31'
Wales' struggles continue, as Robinson's cross from the left is not fully cleared and a swarm of white US shirts surround the red-clad defenders. Again, though, Wales ultimately get the ball clear.
29'
McKennie lays the ball off to Dest, who takes one touch 30 yards out from goal before unleashing a wayward strike which spirals up and far over the crossbar.
27'
Both sets of fans are making themselves heard in the Ahmad Bin Ali Stadium, and there has been plenty of encouragement for the US supporters from their young team so far.
25'
Perhaps fortunately, Adams escapes a caution for clattering into Ramsey in midfield, and the referee's decision-making thus far could be described as inconsistent.
23'
After Pulisic turns just outside the area and releases Robinson on the left side of the box, Rodon's outstretched leg just about diverts the latter's cross away from serious danger.
21'
The established pattern continues, as every red shirt sits inside the Wales half, and the US pass patiently around deep in midfield.
19'
Pulisic is exasperated to not even receive a corner after a US attacking move ends with the Chelsea forward tumbling to the turf. Wales are defending deep here, and it will not be straightforward to break such a discplined unit down.
15'
Dest's clearance to the edge of the area drops nicely for Ampadu, who elects to take a strike on the half-volley. However, it rises well over the crossbar and Turner remains untroubled.
13'
W. McKennie gets yellow.
Again, Williams is felled - this time by McKennie's aggressive tackle from behind - and another booking ensues for the US.
11'
S. Dest gets yellow.
An over-zealous challenge from Dest on Williams by the touchline results in the game's first booking.
5'
To this point, the US have been able to keep the ball without too much pressure from their Welsh counterparts, as Rob Page's men sit back and keep a tight shape in the early stages.
3'
An early chance to deliver a free-kick into the box is wasted by Pulisic, who sees his cross comfortably cleared by Williams.
1'
We are under way at Al Rayyan Stadium!
Hello and welcome to live coverage of today's World Cup Group B clash between the USA and Wales at Al Rayyan Stadium!
UNITED STATES (4-3-3): Matt Turner, Antonee Robinson, Walker Zimmerman, Tim Ream, Sergino Dest; Yunus Musah, Tyler Adams, Weston McKennie; Josh Sargent, Timothy Weah, Christian Pulisic.
WALES (3-4-3): Wayne Hennessey, Ben Davies, Joe Rodon, Chris Mepham; Neco Williams, Aaron Ramsey, Ethan Ampadu, Connor Roberts; Dan James, Gareth Bale, Harry Wilson.
UNITED STATES SUBS: Ethan Horvath; Sean Johnson, Giovanni Reyna, Jesus Ferreira, Brenden Aaronson, Luca de la Torre, Aaron Long, Jordan Morris, Cristian Roldan, Shaq Moore, Haji Wright, Cameron Carter-Vickers, DeAndre Yedlin, Kellyn Acosta, Joe Scally.
WALES SUBS: Danny Ward, Adam Davies, Chris Gunter, Joe Allen, Brennan Johnson, Kieffer Moore, Joe Morrell, Tom Lockyer, Jonny Williams, Mark Harris, Sorba Thomas, Dylan Levitt, Ben Cabango, Rubin Colwill, Matt Smith.
Wales head to just their second World Cup in their history and their first appearance at FIFA's major tournament in 64 years. Rob Page's side defeated Ukraine in the play-offs, courtesy of a Gareth Bale free-kick, to secure their spot in Qatar. The Dragons have not played since September 25 - a 1-0 loss to Poland in the Nations League - and are winless in their last five outings.
The national anthems are about to be belted out in Doha as Wales prepare for a historic outing on the world's biggest stage!
The big news for Wales is that captain Bale will be fit to start in the Middle East. The ex-Real Madrid forward will be flanked by James and Wilson, with Page opting for a three-man defence that includes Tottenham's Davies.
Out-thought and overrun in midfield, Wales will require a re-think during the break - they are perhaps fortunate not to be further behind. Page could opt for a change of shape to cope with the Americans' swamping of midfield, but it would take a radical shift in momentum to turn events in their favour and secure their first World Cup win since 1958.
That's all from Al Rayyan today, so thank you for joing our World Cup coverage and goodbye!
The US must bounce back quickly from their disappointment at failing to close out the win today - they last tasted victory in the World Cup five games ago - as they meet Group B leaders England on Friday. Wales, meawhile, will feel their meeting with Iran is a must-win, as they face an all-British clash with the Three Lions on the final day.
Today, the USA return to the World Cup finals after missing the 2018 edition. This time around in qualifying, Gregg Berhalter's squad claimed one of three automatic spots, just ahead of Costa Rica, before suffering a defeat to Japan and managing a draw with Saudi Arabia in September friendlies. Now, they kick off their Group B campaign against Wales.
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