Pak 98-1published at 12 overs
Shan Masood is the new batter and he reverse-sweeps his first ball away for a single.
Pakistan win see-saw game to level series at 2-2
England bowled out for 163 to lose by three runs
Dawson hits 18th over for 24 and looks to be taking tourists to victory before falling for 34 off 17
Rauf takes two wickets in two balls in superb 19th over before Topley run out in the last
Pakistan hit 166-4 after Rizwan's 88 off 67 balls
Fifth T20 in Lahore on Wednesday
Sam Drury and Tom Mallows
Shan Masood is the new batter and he reverse-sweeps his first ball away for a single.
Daniel Norcross
BBC Test Match Special
The partnership is finally broken!
Babar c Duckett b Dawson 36 (Pak 97-1)
Liam Dawson gets the breakthrough! It's not the best ball he will ever bowl but it has done the job.
Babar Azam was looking to follow his partner Mohammad Rizwan by getting on with things but can only pull the ball straight to Ben Duckett on the mid-wicket boundary.
Daniel Norcross
BBC Test Match Special
Very nearly been brilliantly caught but the fielder has taken the ball over the ropes.
It's six at last for Rizwan.
There it is! Mohammad Rizwan launches Adil Rashid back over his head for the first six of the day.
It is very nearly some brilliant fielding by Will Jacks at long-on though, who dives to claim the ball before tumbling over the boundary rope.
There's the first sign that Pakistan are ready to put their foot on the accelerator.
Mohammad Rizwan looks to heave Adil Rashid out of the ground but can only play the ball into the pitch.
He reaches for the next delivery too but is fortunate as the ball loops into the air but lands safe.
James Taylor
Former England batter on BBC Test Match Special
Really intelligent batting from Babar and Rizwan.
It shows how good they are, they haven't hit a ball in anger or taken any risks.
Mohammad Rizwan dinks Liam Dawson's final ball into the on-side and is able to run two to bring up his fifty from just 38 balls - a brilliant effort from the Pakistan opener.
Babar Azam is looking in good touch as well as Pakistan reach 82-0 at the halfway stage.
Ominous signs for England
Aatif Nawaz
BBC Test Match Special commentator
Good over from Rashid. Just pinning these Pakistani batters a little bit.
Frustration for Babar Azam as he seizes on a short ball by Adil Rashid but can only mis-hit the ball back to the bowler. Rashid got away with one there.
He is on the money for the rest of the over, though. Just the three singles off it, there is a bit of turn on offer as well.
That just drags things back slightly for England.
James Taylor
Former England batter on BBC Test Match Special
That's an amazing shot from Babar and he's timed it lovely.
Back-to-back boundaries for Babar Azam as David Willey enters the attack.
The first is beautifully placed with an open face past third man. The second is pulled away through mid-wicket.
Adil Rashid bowls the first over from the powerplay and these two Pakistan openers expertly pick out the gaps in the field for five singles.
Some brilliant fielding from Will Jacks on the boundary then prevents a four and Pakistan can only run two.
James Taylor
Former England batter on BBC Test Match Special
Pakistan have been excellent and these two are super consistent.
Aatif Nawaz
BBC Test Match Special commentator
Dawson seems to forget that was a free hit.
Olly Stone oversteps resulting in a free hit. Babar Azam perfectly picks out Liam Dawson on the boundary so can only run one - though I'm not sure Dawson realised it was a free hit as he took his time throwing the ball back. Wake up, Liam!
Two more singles lifts Pakistan up to 52-0 after the powerplay. A decent platform and a considerable improvement from the last match on Friday.
Change of ends for Olly Stone, who is being clocked at 88mph. Not too shabby.
That is shabby though. He bowls a full toss that Mohammad Rizwan smashes back down the ground for four.
Daniel Norcross
BBC Test Match Special
Like a man flicking his tie over his shoulder, Rizwan hits the boundary.
Great technique from Mohammad Rizwan as he plays a loopy paddle shot that races away from the chasing Adil Rashid for four.
Liam Dawson is back for a second over and his first ball is cut away expertly for four by Babar Azam - who has not had much of the strike so far.