Postpublished at 80 mins
Barnet 3-3 Brentford
Neal Maupay lashes the ball towards the Barnet net but young William Huffer, who will remember this tie for the rest of his career, shows strong hands to keep it out.
In-play clips of Barnet v Brentford available to UK users only
Coulthirst scores twice for Barnet after Watkins' opener for Brentford
Watkins goes down despite little sign of contact, Maupay scores from spot
Canos restores Brentford lead before sub Sparkes curls in superb free-kick
Winner goes to Swansea in fifth round
Neil Johnston
Barnet 3-3 Brentford
Neal Maupay lashes the ball towards the Barnet net but young William Huffer, who will remember this tie for the rest of his career, shows strong hands to keep it out.
Barnet 3-3 Brentford
The TV exec who decided Barnet against Brentford was worthy of the live cameras...give that person a pay rise!
Barnet 3-3 Brentford
Barnet 3-3 Brentford
Steve Claridge
Ex-Premier League striker on BBC Radio 5 live
This is absolutely ridiculous.
Boy, what a free-kick. Daniel Sparkes gets it up and over and had the distance to do it.
A wonderful effort and the pendulum swings yet again.
Dan Sparkes
WHAT. A. GAME.
The magic of the FA Cup is alive and kicking at The Hive as substitute Dan Sparkes curles a free-kick over the Brentford wall and in-off the underside of the bar.
David Beckham in his prime would have been proud of that one!
What a crazy, crazy tie this is.
Barnet 2-3 Brentford
Steve Claridge
Ex-Premier League striker on BBC Radio 5 live
Barnet got slightly caught out of position.
It was delicately poised at 2-2 and Brentford got in behind, Sergi Canos times his run perfectly, takes a super first touch and slides it home.
A really good finish and makes up for the miss in the first half.
Sergi Canos
Nothing controversial about this. Super goal!
Sergi Canos shows great composure to take the ball away from Dan Sweeney just as the Barnet defender is about to make a challenge before slotting under the keeper.
You cannot takes your eyes off this!
Barnet 2-2 Brentford
There were just 192 seconds between Shaq Coulthirst's first and second goals for Barnet.
Barnet 2-2 Brentford
Woodwork struck twice, non-league side comes from behind to take the lead and a hugely controversial penalty to get Brentford back on level terms. Ingredients for a cracking tie.
#bbcfootball or 81111 (UK only)
Paul: That was a dive. Brentford and Watkins are utterly pathetic. Having to cheat to get level against a non-league team.
Simon Goodall: No VAR in this tie? Well there is... It's called Very Awful Refereeing... What an abysmal decision.
Barnet 2-2 Brentford
Steve Claridge
Ex-Premier League striker on BBC Radio 5 live
Both of these sides have been in the ascendancy in periods and when you think one is getting on top of the other, they show fight and character to come back.
Both really want to win the game.
Neal Maupay
The Championship side are back on level terms as Neal Maupay scores from the spot but they can count themselves extremely fortunate.
A huge moment of controversy.
Barnet 2-1 Brentford
Oh my goodness, how is that a penalty?
Ollie Watkins goes down inside the Barnet penalty area close to David Tutonda.
Replays show there was no contact but referee Andy Madley points to the spot.
Brentford have struck lucky. There is no contact. There's also no VAR.
Barnet 2-1 Brentford
Wonder if former Barnet boss Edgar Davids is watching this?
This is a terrific advert for the FA Cup. Brilliant by the non-league Bees.
#bbcfootball or 81111 (UK only)
Carl Arrowsmith: This is amazing, love the magic of the FA Cup.
Barnet 2-1 Brentford
Steve Claridge
Ex-Premier League striker on BBC Radio 5 live
Incredible.
Barnet get he luck with a few deflections but it sits up nicely for Shaquile Coulthirst and he smashes it in at the near post.
Wow, have they turned this game around, or what!
Shaq Coulthirst
Astonishing. Shaq Coulthirst has done it again.
Another FA Cup shock is brewing after Coulthirst finds the net after an almighty scramble deep inside the Brentford penalty area.
Coulthirst scored the winner against Sheffield United in the third round.
He loves the FA Cup!
Barnet 1-1 Brentford
Steve Claridge
Ex-Premier League striker on BBC Radio 5 live
It is really good move.
The hosts get in behind Brentford down the right, but somehow Shaquile Coulthirst gets the ball out of his feet and toe-punted it into the net.
Now we have a game on, Barnet are back in it.
Shaq Coulthirst
Game on! The non-league side are level. And it's a lovely equaliser.
No surprise that Ephron Mason-Clark right at the heart of the move as his unselfish pass in the penalty area finds Shaq Coulthirst who pokes home.
Carnage at The Hive.
Barnet 0-1 Brentford
It's Brentford who have come out all guns blazing.
Seconds into the new half they win a corner before former Chelsea player Josh McEachran drills a low free-kick into the six-yard area which Will Huffer does well to hold.