Whittaker off after two yellows 187 secs apart
Pelle slots in from close range after Mane pass
Tadic fires in second from 10 yards
Tadic's second poked in from two yards
Southampton 1-0 Norwich
Image source, Getty ImagesGraziano Pelle is a strange mix of an old-fashioned bruiser of a centre-forward and your archetypal foreign fancy-dan.
The Italian plays the latter role with an extravagant flick around the corner for Jay Rodriguez. Lovely touch, but Rodriguez has strayed offside.
Southampton 1-0 Norwich
Image source, Getty ImagesWe are back under way.
Southampton 1-0 Norwich
The teams trot back out. Southampton are making a change as Jay Rodriguez replaces Steven Davis.
Boot to jugular.
Southampton 1-0 Norwich
The 'celebrating red cards' debate rumbles on...
Southampton 1-0 Norwich
Norwich, whose heatmap is on the right of these two images, have been most busy around their own penalty spot.
That late Graziano Pelle goal means that they will have to chance their arm a little more in the second half.
Had Cameron Jerome converted that chance halfway through the first half it might have been a very different scenario for Alex Neil's side.
Southampton 1-0 Norwich
Image source, OptaSouthampton to leap-frog Norwich as it stands.
And it will take a pretty smart plan for Norwich to wrestle this match back their way after Steven Whittaker's red card.
Southampton 1-0 Norwich
Great work from James Ward-Prowse and Sadio Mane, before Graziano Pelle's calm finish, as shown below.
Image source, OptaSouthampton 1-0 Norwich
Southampton 1-0 Norwich
Steve Claridge
BBC Radio 5 live at St Mary's
"It's a strange goal. Pelle makes his way inside of the defender and just helps it on inside the post. But Southampton have deserved that."
Graziano Pelle
Image source, ReutersSouthampton were struggling to work out the puzzle of 10-man Norwich, but they hit on a solution just before the break.
Sadio Mane gets goal-side of Alex Tettey and feeds the ball into the box where Graziano Pelle has got in front of Russell Martin to turn the ball beyond a helpless John Ruddy.
He was only just onside from the pass.
Southampton 0-0 Norwich
Oriol Romeu robs Graham Dorrans in midfield and Southampton burst forward, attempting to exploit the turnover.
Norwich have kept plenty of men back though and hold a strong defensive line as the cross comes in. Graziano Pelle is up to meet it, but his knock-down fails to find a team-mate.
Southampton 0-0 Norwich
Attack, attack, attack.
Southampton's front three have one job - go and score a goal. The graphic below left shows how Dusan Tadic (11), Graziano Pelle (19) and Sadio Mane (10) are consistently close together and pouring forward.
Norwich's Cameron Jerome (10), however, isn't getting much support from those behind him. That's unlikely to change as Norwich attempt to hold what they have with 10 men.
Image source, .Southampton 0-0 Norwich
Image source, AFPNorwich's ten men are scurrying and scraping. Cameron Jerome is now doing a solo job up front, with his team-mates just dots on the defensive horizon.
They are gagging for half-time and a chance to regroup. Southampton will want something to show for their dominance. Five to go.
Southampton 0-0 Norwich
Alex Neill makes a change and it is the obvious one. Wes Hoolahan gets hooked and on-loan defender Andre Wisdom is thrown on to shore up the backline.
Southampton 0-0 Norwich
Southampton 0-0 Norwich
Image source, ReutersDusan Tadic celebrated that red card for Steven Whittaker like a goal. His side, a man up, are already getting stuck into Norwich.
Sadio Mane sends a cross skimming through a packed six-yard box and somehow no team-mate gets a touch.
Steve Claridge
BBC Radio 5 live at St Mary's
"It's crazy. He was walking a tightrope as soon as he picked up that first yellow. Tadic knew what he was doing, but that was bonkers from Whittaker."
Southampton 0-0 Norwich
Image source, ReutersSnap! The first yellow card is followed by a second in quick succession. Steven Whittaker has a chunk of Dusan Tadic's shirt as the Southampton man attempts to get onto the end of James Ward-Prowse's chipped throughball.
He's a goner.
Southampton 0-0 Norwich
Steven Whittaker with a cynical bit of play, blocking Matt Targett's attempt to take a quick throw-in to try and buy his side time to reorganise.
He sees yellow.
Phil McNulty
BBC Sport chief football writer
A bit of transfer news to bring you...
Liverpool winger Lazar Markovic has joined Turkish side Fenerbahce on a season-long loan deal.
A £20m signing from Benfica last summer, the 21-year-old is being allowed to move to aid his development and Liverpool insist he will be returning to Anfield.
The Reds will receive a loan fee from Fenerbahce.
Image source, Reuters