Phil McNulty
BBC Sport chief football writer at Wembley

It is a scramble but how much will that goal mean to Arsenal? Arsene Wenger's side have shown real grit here today and now have that crucial extra-time advantage thanks to Alexis Sanchez.

Wenger looks calm on the sidelines but this would be a huge win for him.

Nacho Monreal fires in from Alex Oxlade-Chamberlain's teasing cross to draw Arsenal level against Manchester City in their FA Cup semi-final at Wembley.

Sergio Aguero races on to a Yaya Toure pass to lift it over Petr Cech and put Manchester City 1-0 up against Arsenal in their FA Cup semi-final at Wembley.

Phil McNulty
BBC Sport chief football writer at Wembley

The Poznan. Inflatable bananas. Blue flags. Pandemonium in the Manchester City end of Wembley as Sergio Aguero does the job again.

The Argentine had the pace to escape Nacho Monreal and the technique and composure to beat Petr Cech. A class act.

Now Arsenal...what have you got left?

Phil McNulty
BBC Sport chief football writer at Wembley

Arsenal have had to contend with plenty of jibes about being "too soft" in the past - not today as they show real defensive discipline and a willingness to meet Manchester City in the physical challenges.

They are even getting one or two moments of joy in an attacking context as a tense second half unfolds here at Wembley.

Pep Guardiola is still animated, arms outstretched calling for more width from his players to test Arsenal.

Raheem Sterling's goal for Manchester City is ruled out after the linesman says Leroy Sane's cross went out of play behind the goal before coming back in.

Phil McNulty
BBC Sport chief football writer at Wembley.

Is this the footballing version of Muhammad Ali's "Rope A Dope" tactic which beat George Foreman?

Manchester City are the team with the ball as Arsenal sit back, seemingly asking them tho show what they have got.

It's a dangerous ploy but Arsenal, for all their passivity, are still in this FA Cup semi-final.

Phil McNulty
BBC Sport chief football writer at Wembley.

With David Silva off, Manchester City manager Pep Guardiola will look to Kevin de Bruyne to take on the role of creator-in-chief.

Silva never recovered from Gabriel's early challenge and was still very unhappy with referee Craig Pawson as he went off.

City still enjoying most of the possession but are struggling to get a clear sight of Arsenal keeper Petr Cech. Frustration for them so far.

Phil McNulty
BBC Sport chief football writer at Wembley

Manchester City enjoying most of the possession but Arsenal standing firm so far.

City manager Pep Guardiola has taken up permanent station in his technical area - just the occasional visit from his Arsenal opposite number Arsene Wenger so far.

Phil McNulty
BBC Sport chief football writer at Wembley

Less than 15 minutes to kick-off and still thousands of empty seats inside Wembley. Hopefully just latecomers but they are cutting it fine.

Phil McNulty
BBC Sport chief football writer at Wembley

Announcers from the two clubs are revving things up at Wembley - Arsenal's man has just finished firing up their fans and now we have a blast of the The Clash classic "London Calling" for good measure.

Phil McNulty
BBC Sport chief football writer at Wembley

Arsene Wenger will know victory in today's FA Cup semi-final will make Arsenal's fans feel a lot better about the idea of him extending his time as manager.

And he sticks with the three-man defensive system used in victory at Middlesbrough with Gabriel, Laurent Koscielny and Rob Holding given the task of keeping out Manchester City's multi-talented attack.

City captain Vincent Kompany gets the chance to make up for the long months of injury frustration as he starts, while Claudio Bravo gets the nod over Willy Caballero in goal.

Alan Shearer says Chelsea FA Cup semi-final victory against Tottenham shows why they will go on and win the Premier League.

Arsenal manager Arsene Wenger believes his British players "have to take charge" of the future of the club.

Chelsea manager Antonio Conte says reaching the FA Cup final in his first season in English football is a "proud" achievement for him, after a 4-2 semi-final win over Tottenham.

Nemanja Matic scores a stunning goal as Chelsea beat Tottenham in a thrilling semi-final at Wembley to reach the FA Cup final.

Tottenham boss Mauricio Pochettino says Chelsea's finishing was more "clinical" than that of his own team, after Spurs lost 4-2 to the Blues in the FA Cup semi-final at Wembley.

Nemanja Matic scores a stunning strike to help Chelsea beat Tottenham 4-2 at Wembley and reach the FA Cup final.

Substitute Eden Hazard fires home for Chelsea to put them 3-2 up against Tottenham in the FA Cup semi-final at Wembley.

Tottenham's Dele Alli volleys home against Chelsea after Christian Eriksen's stunning cross in the FA Cup semi-final at Wembley.