Barney Williams a little unlucky to go into the referee's notebook for a little trip on Alfie May.

Definitely a foul, mind.

Matthew Upson
Former England defender on MOTD Live

You have to say they've been ruthless when they've had the chance.

A couple of quality pieces of finishing in and amongst the goals, but on the whole when the chances have presented themselves, Charlton have taken them.

Alfie May wants his hat-trick but is forced slightly wide when he collects a ball in the area and Charlton have to rebuild.

Here's how Charlton pulled away from Cray Valley in the space of nine second-half minutes and almost certainly booked a second-round visit to League Two Gillingham...

Arthur Lee shepherds a long ball down the line out of play for a goal-kick under pressure from Nathan Asiimwe.

But the game is being played almost entirely in their half now with the gas tanks running low.

Thought Charlton might ease off with the tie in the bag but none of that.

They're seeking a fifth goal and Nathan Asiimwe earns a corner.

Denzel Gayle's cross deflects out for a corner off Lloyd Jones - but the flag-kick comes to nothing.

Flurry of subs as Cray Valley bring on Thomas Chambers and Clavin Ekpiteta, while Tennai Watson comes on for Charlton.

Charlton just playing the ball around patiently now, like a predator toying with its prey.

The Millers win back-to-back corners but Freddie Parker's header into the mixer is punched clear by Charlton keeper Sam Walker.

Yep, that's the end of Hassan Ibrahiym's evening.

Kiki Oshilaja comes on in his place.

Credit to Cray Valley, damage control doesn't seem in their vocabulary.

They stream forward at three goals down and earn a corner.

But there's a delay taking it as Hassan Ibrahiym is down injured.

Matthew Upson
Former England defender on MOTD Live

It has to be some goal to beat Alfie May's first goal for me, but this is right up there.

I think Dobson turned away in a little bit of disbelief. He has stuck it in the top corner with his left foot.

It's a perfect strike from that position.

The home support are trying to rally their side but there's no doubt those quickfire two goals have taken the air out of this place.

Charlton skipper George Dobson tries to do his best to reinflate it with an absolutely horrendous backpass that puts Sam Walker in all sorts of trouble.

But the keeper, on a booking after conceding that first-half penalty, manages to just about hoik it clear under pressure.

Matthew Upson
Former England defender on MOTD Live

Has that put the cup upset to bed, I think it might have done.

I'm not sure if this deficit is recoverable for Cray Valley.

They're really going to have to come out now and it leaves them so exposed in behind.

Image source, Rex Features

Fair to say Cray Valley's chances of progressing now are, er, Paper-thin.

Matthew Upson
Former England defender on MOTD Live

He's been a class act all night and a notch above in terms of his quality.

They turn the ball over fairly and the space is there. Cray Valley are exposed and that's one thing you don't want to be when this player is in this kind of form.

Charlton want a penalty of their own as Tayo Edun goes tumbling in the Cray Valley area.

There seemed to be some contact there but the referee is having none of it.