The 39-year-old Wes Hoolahan is on for Cambridge.

Image source, Reuters

The Leicester engineers are scrambling around because the lights are still off at the King Power stadium.

Players have come across to get some water and the fans are just sat there waving phones. Feel like we're missing a DJ and some fireworks.

Another long throw into the Port Vale box proves awkward for the hosts, but eventually they get the ball clear before seeing their latest attempt at punishing Brentford on the counter thwarted.

Another couple of changes follow for Vale, as Mal Benning and Dennis Politic replace James Gibbons and David Amoo.

Steven: If Newcastle suffer a cup upset they'll only have themselves to blame. They've had the chances to make for a comfortable 2nd half.

Eddie Howe throws on Miguel Almiron and Joe Willock in a bid to get back into this.

THE GOAL STANDS!

It was a long, long check for offside. Joe Ironside had his head in his hands, but the confirmation comes through that he has given Cambridge the lead and the travelling fans go wild!

Peterborough have a couple of chances as they look to retake the lead.

Firstly, Siriki Dembele shoots over the top and then goalscorer Sammie Szmodics is denied as James Belshaw is quick off his line to gather the ball.

Kidderminster captain Sam Austin gets away down the right and has a go at goal from a tight angle but bends his shot just wide of the far post.

The lights have gone out at the King Power!

Watford are making three changes but nobody can see them. The referee has to stop play briefly.

The home fans start chanting "we're Leicester City, we'll play in the dark". Fans have got their phone lights out too.

Jonathan Woodgate
Former England defender on BBC Radio 5 Live

Joe Ironside has been an absolute handfull all game. He has swivelled in the box and buried it in the bottom corner.

Cambridge have done so well to be narrow and defensive and hit Newcastle on the break. There is an upset on the cards.

A first change for Port Vale, as teenager Kian Harratt replaces James Wilson.

Can Harratt be his side's hero? Brentford are controlling things for the time being.

Tyrone Marsh is not far off adding to Boreham Wood's lead but his low shot is pushed wide of the post.

Really good performance by the home side.

Changes from Brighton.

Marc Cucurella and Leandro Trossard are on for Odel Offiah and Danny Welbeck.

Harvey Barnes races through on goal and slots it into the net. He thinks he's made it 3-1 but the flag is up for offside.

There will be a VAR check... I think he might have been onside you know? It's inches either way.

Ryan Fraser is fouled just outside the box and Kieran Trippier might fancy this...

Around 25 yards out, the right-back stands over it, and hits the wall.

No real response from Brighton after that early second-half goal from Callum Robinson. They caused a few problems in the first half though, so can they get themselves back in it?

Image source, Reuters

Lovely from Kieran Trippier. The new signing stops it dead with a silky first touch and then nonchalantly clips a pass into Ryan Fraser's path, but it just gets away from the winger and Dimitar Mitov gathers.

No side has been eliminated in the FA Cup third round more times than QPR (50). The hosts were the better side in the first half and they have started the second half well, but Andre Gray's header is saved by Josh Vickers.