What have Birmingham got in the second half?

A blocked Gary Gardner effort from outside the penalty area is the best they have done in the second half so far.

It's frantic, 100-mile-per hour stuff at Bolton. Two efforts in quick succession are blocked for Bolton.

Both sides fancy this and both pushing for a second goal.

Danny Gabbidon
Former Wales defender on BBC

West Ham just haven't looked ready for this over the two games. They won't be used to this physicality in the Premier League.

Bristol City are trying to make the most of the man advantage as Tommy Conway looks to break the offside trap, but he is a fraction off.

West Ham players look rattled as Tomás Soucek gives away a needless foul.

Bristol City fail to make the most of the free-kick as the ball is played to Tommy Conway before his cross goes flying high across the box.

Eastleigh look much more organised at the back. Newport are struggling to create chances and have been unable to build. The non-league side have their tails up.

Danny Gabbidon
Former Wales defender on BBC

It looks like West Ham have gone to a back four now with Emerson pushing forward into a left wing position.

Image source, Getty Images

Anis Mehmeti is taken out by Vladimír Coufal on the flank and Bristol City have a free-kick. Things have got a bit spicy now after Saïd Benrahma's sending off.

Around 20 minutes of normal time for Wolves to find an equaliser otherwise there will be no Black Country derby in the next round.

Luton so, so close to an equaliser. Jordan Clark's shot is hit into the ground and loops up and bounces off the left upright. Bolton goalkeeper Nathan Baxter then makes two brilliant saves, one with his feet, one with hands to keep it level.

But what a cup tie this is and Dion Charles is just about to shoot at goal, but is denied by an immense challenge from Ross Barkley in the penalty area with the Bolton man eyeing up his second goal of the night.

Danny Gabbidon
Former Wales defender on BBC

West Ham have fallen into the trap. Bristol City have been like that all night.

They've been snapping into challenges all night.

Saïd Benrahma is sent off for that bad reaction to being fouled.

West Ham are down to 10 men.

Emma Smith
BBC Sport at Toughsheet Community Stadium

Rob Edwards clearly isn't messing around, with a triple change at half time.

Luton have had the majority of possession and chances, but have also been sloppy at both ends of the pitch tonight.

There's a bit of a melee now as Bristol City players think they should have a free-kick after a foul by Emerson. Joe Williams then goes in robustly on Saïd Benrahma, who appears to kick out.

Williams is booked but Benrahma could be in trouble here.

Almost one of the goals of this year's tournament from Bolton's Victor Adeboyejo, who so nearly caught out Tim Krul with a strike from 45 yards.

Have a watch here..

A completely different atmosphere in Hampshire.

After a flat first 45 minutes, the Silverlake Stadium is rocking!

The non-league club are back on level terms and have their tails up.