Isaac Mbenza replaces goalscorer Alex Pritchard for Huddersfield.

West Ham also make a change as Pablo Zabaleta is off and Ryan Fredericks comes on.

Michail Antonio tries to make his mark on the game as he canters across the top of the box before drilling a shot, which flies over the bar.

Burnley have weathered a Leicester storm and are now looking dangerous on the counter.

Chris Wood fires over from a good position.

Will we see some late drama at the King Power?

How nervous are you Newcastle fans?!

David Brooks finds Ryan Fraser with a lovely threaded pass down the wing. Fraser beats Fabian Schar but Federico Fernandez comes across and blocks the cross.

Image source, reu

Two huge decisions by referee Simon Hooper at St Mary's.

Southampton are 20 minutes from three massive points and a rare top-flight home win.

JC: I note nobody is saying Ryan Bertrand "should have done the honest thing" and told the ref it actually was a penalty...

Russell: Yet more decisions adding to the arguments in favour of VAR.

West Ham are winning the possession battle but haven't been able to make the most of their chances so far in this second half.

Image source, Opta

Jordon Ibe loses the ball and Newcastle can counter. Matt Ritchie's deep ball finds Ayoze Perez at the back post and Ritchie continues his run into the box. He receives it back but his sliding shot is always heading wide.

Michail Antonio comes on for Pedro Obiang. West Ham are looking for that equaliser.

Jordon Ibe beats Paul Dummett on the right and stands a ball up in the centre. Callum Wilson powers a header goalwards but gets too much on it and it flies over the bar.

H-U-G-E controversy!

Charlie Austin has the ball in the back of the Watford net and Southampton's players wheel away in celebration.

There's a massive delay before referee Simon Hooper decides to disallow it.

Maya Yoshida is standing in the eye-line of Ben Foster when the ball hits the net but the Watford keeper does not appeal.

We're going to hear a lot more about that on Match of the Day later.

Image source, Reuters

Ryan Fraser goes on a darting run through the middle before shooting from the edge of the area. It takes a deflection and almost falls kindly for Callum Wilson but it's just a few yards in front.

Pedro Obiang tries to flick it on at the near post and he almost finds the back of the net. It bounces just inches wide of the goal frame.

Dan Gosling is frustrated with himself because he gets his timing all wrong and sends another header wide of the post.

Another chance for Wilfred Ndidi. Blocked!

Leicester are banging on the Burnley door.

Image source, Getty Images

John: Some shocking refereeing down at St. Mary's. Most obvious penalty all season, not given. Southampton dining out on a huge slice of luck.

Garth Crooks
BBC Sport football expert on Final Score

A stone wall penalty. Clear as the nose on your face. Either the referee is in a bad position or he is not prepared to go with his instincts, but it is a clear penalty. Ryan Bertand was no where near the ball.

The corner is swung into the far post but Dan Gosling's header is skewed wide. Newcastle go straight up the other end but Salomon Rondon also heads wide from Matt Ritchie's swinging cross.