Summary
Andre Ayew's header hits the post for Swansea City late in the first half
Ayew has a penalty saved by David Raya after 63 minutes
Rico Henry shown a straight red card two minutes later for challenge on Connor Roberts
Ayew makes amends for penalty miss with brilliant strike on 81 minutes
Swansea hold on to take one-goal lead to Griffin Park in the second leg on Wednesday
Live Reporting
Dafydd Pritchard
The tackle in questionpublished at 75 mins
Angry Bees - but are they justified?published at 75 mins
75 minsSwansea 0-0 Brentford
Gareth Vincent
BBC Sport Wales at the Liberty StadiumBrentford are angry having seen Rico Henry shown a straight red card for a challenge on Connor Roberts - but are they right to be angry?
Henry and Roberts both went after a loose ball right in front of the dugouts.
Henry got some of the ball, but his boot was raised and there was real force in the challenge.
Swansea now have around 20 minutes to try take advantage of the extra man.
Ayew reacts to penalty misspublished at 73 mins
73 minsSwansea 0-0 Brentford
How important could that be?
SUBSTITUTIONpublished at 71 mins
71 minsSwansea 0-0 Brentford
Double-change for Brentford as the game restarts.
Mads Roerslev and Emiliano Marcondes on for Josh Dasilva and Bryan Mbuemo.
Conor Gallagher has a shot saved by David Raya, who could prove to be Brentford's hero if they can hold on here.
get involved Get Involved - Red or no red?published at 70 mins
70 mins#bbcefl
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End of twitter post 2get involved Would you want this next season?published at 69 mins
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End of twitter post'The referee is right'published at 68 mins
68 minsSwansea 0-0 Brentford
Ian Walsh
Former Wales striker on BBC Radio WalesHe leads with his studs and he is late.
The referee is right, by the letter of the law he needs to go.
Drinkspublished at 68 mins
68 minsSwansea 0-0 Brentford
I think we could all do with a little breather after those few moments of action.
A missed penalty and a red card, all in the space of a minute.
Ladies and gentlemen, the Championship play-offs!
RED CARDpublished at 65 mins
65 minsSwansea 0-0 Brentford
Red card for Brentford!
This could be controversial - the Bees' players and coaches are furious.
Rico Henry slides in on Swansea right-back Connor Roberts. It looks rash but Henry is convinced he got the ball.
Keith Stroud disagrees and reaches for the red card, and Brentford will have to play the final 25 minutes with 10 men.
Replays show Henry's leading foot was raised, with studs showing. Was that a fair decision?
MISSED PENALTYpublished at 64 mins
64 minsSwansea 0-0 Brentford
David Raya saves the penalty from Andre Ayew!
PENALTYpublished at 63 mins
63 minsSwansea 0-0 Brentford
Penalty to Swansea!
It's a swift Swans counter-attack, with Andre Ayew breaking forward and feeding Rhian Brewster, who's brought down in the box by Brentford captain Pontus Jansson, who can have no complaints.
Chance!published at 61 mins
61 minsSwansea 0-0 Brentford
Andre Ayew has his head in his hands, and you can see why after that miss.
Swansea's forward cuts inside on to his favoured left foot inside the Brentford penalty area but he doesn't quite wrap his foot around the shot, which curls over.
You would have expected better from a player of his quality.
Postpublished at 60 mins
60 minsSwansea 0-0 Brentford
Swansea's Jay Fulton lines up a shot from 25 yards but he curls it into the grateful arms of David Raya.
Brentford then counter-attack through Ollie Watkins down the left before that move breaks down.
The game looks like it might be getting a little stretched now.
Postpublished at 57 mins
57 minsSwansea 0-0 Brentford
Brentford are in the ascendancy again, peppering Swansea's penalty area with a flurry of fine crosses.
They're not leading to many clear-cut chances but the visitors' threat is growing.
YELLOW CARDpublished at 55 mins
55 minsSwansea 0-0 Brentford
That's an excellent header from Ben Cabango, Swansea City's young centre-back, as he clears a dangerous cross from Henrik Dalsgaard.
But just moments later Cabango gets himself booked for a foul on Ollie Watkins.
Chance!published at 51 mins
51 minsSwansea 0-0 Brentford
Big chance for Brentford and Mathias Jensen, who pulls his left-footed wide inside the Swansea penalty area.
It was a nice pass from Said Benrahma to tee him up.
Trundle leads the way - from the standspublished at 50 mins
50 minsSwansea 0-0 Brentford
Gareth Vincent
BBC Sport Wales at the Liberty StadiumThe cries of encouragement from the few people in the Liberty Stadium stands are getting more desperate as this contest wears on.
Both sides have their backers, but it is the distinctive Liverpudlian lilt of Swansea legend and club ambassador Lee Trundle that can be heard most clearly early in the second half.
The home side are responding, with Cooper's men showing plenty of attacking intent right now.
YELLOW CARDpublished at 48 mins
48 minsSwansea 0-0 Brentford
Brentford right-back Henrik Dalsgaard is booked for a late sliding tackle on Jake Bidwell.
From the ensuing free-kick, Conor Gallagher crosses and Andre Ayew heads straight at David Raya in the Brentford goal.
Postpublished at 46 mins
46 minsSwansea 0-0 Brentford
Brentford pass it around beautifully at times - but they also know when to opt for the no-nonsense approach.
Big centre-back and captain Pontu Jansson clears his lines with an absolute monster of a punt downfield.
KICK-OFFpublished at 46 mins
46 minsSwansea 0-0 Brentford
The Brentford players are first back out on to the pitch for the seond half, inspired by another look at Thomas Frank's tactics board. One for Dragons' Den, that.
Swansea's players are out now too.
It will be Brentford to get us under way in this second, and we're off!