Simon Stone
BBC Sport's chief football news reporter

Nottingham Forest and Bournemouth are among the Premier League clubs who have attracted plenty of positive publicity this season after putting together a string of impressive results.

They are both in Champions League contention given there will almost certainly be five qualifiers. But Fulham and Brighton are also on the fringes of the European battle - and that is without mentioning Newcastle and Aston Villa.

Well, after this weekend's results, what about some silverware.

Only one FA Cup final since 1984 and two since 1975 has not had at least one of Arsenal, Chelsea, Liverpool, Man City, Man Utd and Spurs in it.

Four of those clubs are out and with City still shaky and United unconvincing there is a big opportunity in the FA Cup for clubs who have not won tournament in many, many years and in some cases never.

Will: Hilarious. Complain about handballs and offsides given with VAR, then complain when VAR isn't there to give handballs and offsides.

Anon: It's almost like with no VAR, we've gone the other way. Just allow handballs to go. Officials have become too reliant.

Stu: Only two handballs in the build-up to Brighton goal, no problem.

Tom: Nice not having VAR. Back to the good old days of just having to accept the refs are humans and miss things. Only thing that should be at every ground is goalline technology.

Alan: Disaster not having VAR. Why in some rounds of the FA Cup and not others? Leicester were knocked out because of not having VAR in use.

The Football Association confirmed in December that VAR technology would only be introduced from the fifth round onwards to ensure a "consistent refereeing approach for all clubs taking part in the same stage of the competition".

Because of infrastructure and operational costs, VAR had previously only been used at Premier League grounds, and at Wembley in the FA Cup semi-finals and final.

There have been 13 VAR mistakes in the Premier League so far this season - down from 20 at the same point last term - say league bosses.

However, to confuse matters, goalline technology has been in use at Premier League and Championship grounds - where the infrastructure exists - in this year's competition, despite not being available everywhere.

Simon Stone
BBC Sport's chief football news reporter

Together with my colleagues Dan Roan and Nick Mashiter, we wrote a lengthy article for the BBC Sport website ahead of Manchester City's visit to Leyton Orient explaining why Jack Grealish is at a crossroads.

I felt Grealish was far more likely to start against the League One side than Real Madrid this week despite his £100m price tag.

The first part of that prediction came true. Grealish was starting his first game since the previous round's triumph against League Two Salford.

He did catch the eye and he did provide the crucial pass for Kevin de Bruyne's late winner.

Whether it earns him a starting berth against Real is another matter.

"Jack has this sense of the street - a player of the street," said Guardiola.

"Today most of the players are for, the manager, so academic. 'You have to do this, you have to do that'. Jack is there to fight in the stadiums when people shout and he's a fighte.

"He didn't play the last games, mainly because Savinho on the left side made an incredible connection with Erling (Haaland) but this season is still open.

"Against Orient I saw a glimpse that I'm going to rebel, to show the manager how wrong he is. I love that."

Simon Stone
BBC Sport's chief football news reporter

I was at Brisbane Road on Saturday and yes, I do know the home side's goal was a Stefan Ortega own goal - and I do know the ball would not have gone in had it not hit the German - but I am with Leyton Orient boss Richie Wellens on this one.

"It is a shame it has gone down as an own goal,” said Wellens.

“It is not deserved and I am sure Ortega doesn’t want it."

The 50-yard strike was an all-time FA Cup classic goal.

Simon Stone
BBC Sport's chief football news reporter

Chelsea boss Enzo Maresca was complaining at the weekend about Brighton's winner to knock his side out of the FA Cup at the Amex on Saturday.

Maresca said it was 'quite clear' Tariq Lamptey had handled in the build-up to Kauro Mitoma's decisive effort.

It seems the Chelsea manager has not been keeping up with the latest IFAB interpretation of the laws.

"An accidental handball (Lamptey) that leads to a team-mate scoring a goal (Mitoma) or having a goal-scoring opportunity will no longer be considered an offence."

Football fans have become accustomed to debating the use of technology in the game over recent years - but in the FA Cup fourth round, its absence has provided a frequent talking point.

With video assistant referee technology only in use from the fifth round onwards this season, there have been a number of controversial incidents to dissect.

There were several further high-profile incidents at the weekend, and there are still two games to be played over the next two days.

So, what's going on with VAR in the FA Cup - and why?

We covered Liverpool's shock defeat at Plymouth and Aston Villa's win over Tottenham earlier in the day.

In Sunday's other tie, Premier League Wolves scored a quick-fire first-half double to overcome second-tier Blackburn Rovers and progress to the fifth round.

Wolves recovered from a slow start by scoring twice in the space of 100 seconds at Ewood Park, but only after Rovers had an opener ruled out by a marginal offside call during an encouraging start by the Championship hosts.

Joao Gomes squeezed a shot beneath Rovers goalkeeper Balazs Toth as Wolves punished the hosts' attempts to play out from the back in the 33rd minute.

And Vitor Pereira's side seized control of the tie with an immediate second when Matheus Cunha found the bottom corner with a composed finish from Nelson Semedo's pass

Yes, that's right, we still have two more games to come in the FA Cup fourth round, with League Two Doncaster hosting Crystal Palace tonight before Nottingham Forest travel to Exeter City tomorrow.

Will there be any more upsets? Will the lack of VAR have a bearing on either match?

Upsets and VAR were the two key themes of this weekend's cup games.

Let's have a recap of the main talking points...

Nottingham Forest

Image source, Getty Images

Nottingham Forest boss Nuno Espirito Santo spoke to the media this morning ahead of their trip to Exeter tomorrow in the FA Cup. He said their approach will remain "exactly the same".

The Forest manager admittedthe club didn’t achieve “what they wanted” in January.

He said: "We had a clear intention for us to retain the core of the squad. They are here, all available. We didn't achieve what we wanted because it's very hard and we keep going".

When asked about Callum Hudson-Odoi, who has missed the last two matches with a groin problem, Nuno Espirito Santo said that "we will have to see, he’s coming back".

He added Murillo is "much better" and has "re-joined the group normally".

• There is plenty more on Nuno's news conference on BBC Sport's dedicated Nottingham Forest page.

Image source, Getty Images

The Women's FA Cup fifth-round ties took place over the weekend.

Khadija Shaw scored on her Manchester City return to help them see off Leicester.

Arsenal and Chelsea are both through. The Gunners beat London City Lionesses 2-0 and Chelsea came from a goal down to beat Everton and keep their quadruple hopes alive.

Liverpool needed two late goals to see off Rugby Borough, who were the lowest-ranked side left in the competition.

Holders Manchester United, Aston Villa and Crystal Palace all progressed.

Sunderland will be the only non-WSL side in the quarter-finals. They won 2-0 at Portsmouth.

The draw for the quarter-finals takes place on the Women's FA Cup YouTube channel from 18:30 GMT on Tuesday.

Right, Rangers fans you are safe to return.

Before we circle back to the FA Cup, let's have a recap of the Women's FA Cup action...

Rangers manager Philippe Clement believes his side wanted it too much during the 1-0 defeat to Queen's Park.

Despite having 28 shots to Queen's Park's one, Rangers were unable to find a breakthrough on Sunday afternoon and even missed a penalty in the final minute of stoppage time to compound a miserable day at Ibrox Stadium.

Image source, PA Media

Queen's Park manager Callum Davidson speaking after the Scottish Cup victory over Rangers: "We had a game plan that we tried to execute, frustrate them. We couldn't go gung-ho and attack.

"The goal gave us something to hang on to and I'm delighted for the players. The boys were fantastic.

"It was a real tough tie, no one expected that. We had four fit defenders. I woke up at half one this morning hoping no one was ill. We didn't have a back-up plan."

Adam Binnie
BBC Sport Scotland

Image source, Getty Images

Second-tier Queen's Park produced one of the biggest upsets in Scottish Cup history as they beat Rangers 1-0 at Ibrox to advance to the quarter-finals.

Seb Drozd's sublime 69th minute strike gave the visitors a shock lead after Rangers dominated possession without truly threatening.

The Premiership side huffed and puffed in search of an equaliser and looked like they would finally find one in the 97th minute from the penalty spot, but captain James Tavernier's effort was magnificently saved by Calum Ferrie.

That sparked wild scenes of celebration and meant Queen's Park became only the second side to win in 18 games at Ibrox this season after Olympique Lyonnais.

Celtic couldn't do it. Neither could Tottenham.

But the third most successful club in the history of the Scottish Cup - albeit one who last lifted the trophy in 1893 - could at the home of their Glasgow neighbours.