Southampton goalkeeper Gavin Bazunu throws himself at searching ball as Plymouth try catch Southampton out with a long early ball.

The keeper brushes off the heavy contact like it was nothing.

Bristol City have quietly crept into the play-off race and head to St Andrew's this evening just a point outside the top six.

Three wins on the spin - including Boxing Day's 4-1 thumping of Watford - have moved the Robins up to eighth in the table.

And they'll be licking their lips at a fourth straight win against a Birmingham side looking over their shoulders.

The cushion to the relegation zone is seven points at the moment but the Blues have only won two of their past 13 matches under Wayne Rooney.

Image source, Rex Features

A forced change for Plymouth now.

Spaniard Julio Pleguezuelo limps off to be replaced by Dan Scarr.

Adam Blackmore
BBC Radio Solent sports editor

If I'm Plymouth I'm thinking 'blimey, they just got better with their substitutions'.

Joe Aribo has gone close to making a huge impact off the bench.

With his first few touches he steadies himself outside the area before letting rip from distance.

He bends his shot just wide.

Home isn't just where the heart is for Rotherham, it's also the only place they're picking up any points.

The Millers claimed just their third win of the season against Middlesbrough on Boxing Day to move off the bottom, but are nine adrift of safety.

If Leam Richardson's men can record another victory tonight it will be the first time they have won back-to-back matches since October last year.

Visitors Sunderland claimed a late 1-0 win at fellow play-off hopefuls Hull City on Boxing Day to move up to sixth.

However, with a congested mid-table, they're only two points clear of 12th-placed Norwich.

Now for a triple chance for Southampton.

Both goalscorers, Carlos Alcaraz and Che Adams, as well as Will Smallbone go off.

On to replace them are Stuart Armstrong, Joe Aribo and Ryan Fraser.

Two changes now for Plymouth, with Bali Mumba and Jordan Houghton replaced by Mikel Miller and Luke Cundle.

Frank Nouble
Former Plymouth striker on BBC Radio Devon

The ball bounced into the area, it sat up nicely, Argyle now have a mountain to climb.

The goalkeeper was expecting his centre-half to see it.

He is rooted to the spot, it happened so quickly.

Southampton want more than just their one goal.

Will Smallbone has seen a header drift off target before Che Adams manages to scuff another promising chance in the area.

Chris Mitchell: Horrendous decision from the assistant referee at St Mary’s. Plymouth denied a perfectly good goal by a dodgy offside call before Southampton go immediately up field to take the lead, albeit through an excellent strike from Alcaraz. Sort of luck that gets you promoted.

Jo Tessem
Ex-Southampton midfielder on BBC Radio Solent

Saints have broken Plymouth down.

I think the Plymouth players were put off by the offside decision - they were not sure what was happening.

It is so close, but fair play to the linesman it was offside, good call.

Adam Blackmore
BBC Radio Solent sports editor

Totally against the run of play Plymouth lead at St Mary's.

But the flag is up.

The fans were up celebrating, but it was a bit premature.

Lovely cross from Whittaker, free header from Mumba.

Image source, Rex Features

Plymouth think they have the lead, with Bali Mumba heading in at the far post.

The celebrations are euphoric, but the flag is up for offside.

Plymouth have their second corner, and a shot from Morgan Whittaker drops just wide of the post.

Jo Tessem
Ex-Southampton midfielder on BBC Radio Solent

It is not easy to score when Plymouth are set up with five at the back.

That is always going to be a tough task, to break them down and score.

Plymouth goalkeeper Conor Hazard keeps the scores locked with this great reaction save.

Carlos Alcaraz runs into the box and unleashes a shot that gets a deflection on the way to Hazard. The keeper adjusts and gets behind it.

A header on the rebound then goes wide.

Knock, knock. Who's there? Southampton. Southampton, who?

Another Southampton half chance that has gone begging. This one sees Adam Armstrong stand up a neat cross for Samuel Edozie to throw himself at at the back post.

The attempt comes off Joe Edwards, but the officials miss it and it is a goal kick.