Shane Long scuffs a golden chance and the ball ricochets off the post, allowing Craig Cathcart to seep the ball away.

It's not going to happen for Saints, is it?

Oh. My. Word. Another sloppy pass puts Southampton under threat. this time Cedric Soares is the culprit and Watford break. Ryan Bertrand comes to the rescue though, a perfectly-timed tackle winning the ball back in his own area. High-risk.

Even though they have an attacking throw-in, Watford decide to slow things down with another substitution.

Will Hughes is the man to be withdrawn, deciding to take as much time as possible to the displeasure of the Saints fans. On comes Nathaniel Chalobah.

Saints deal with the set-piece but the danger isn't over yet...

Just when Saints start to threaten, they are undone again by some sloppy defending.

A poor pass from Jack Stephens gifts the ball to Will Hughes and Abdoulaye Doucoure can't get a shot away cleanly as the home defence scramble back. Corner...

Mike: What did Redmond shake his head at his substitution? He’s a playmaker and we haven’t had a single shot on target or tested the Watford keeper.

Henry Kravitz: 4-2-2-2 clearly doesn't work in the PL. Ralph go back to 4-2-3-1 or 4-3-3

The closest Southampton have come to a goal!

Sofiane Boufal scampers into the Watford box and cuts back to Shane Long who digs the ball out and forces Ben Foster into tipping onto the top of the crossbar.

Hope for Saints.

Watford boss Quique Sanchez Flores decides to make a change - Gerard Deulofeu is hooked with Andre Gray bringign a fresh pair of legs.

What are Watford thinking? The visitors unnecessarily invite pressure onto themselves as they go backwards, leaving Ben Foster trying to do a Cruyff turn to escape Danny Ings.

But Foster slips/gets into a tangle and both men go down. Ings screams penalty... Michael Oliver gives a free-kick to Watford.

Saints winger Moussa Djenepo does well down the right flank, whipping in a cross which Shane Long flings himself towards but just can't stick an outstretched size nine on it.

Southampton have upped the tempo after those substitutions, Watford are trying to slow down the home side.

Back under way after that short break for Etienne Capoue to recover his senses.

Ouch! Watford skipper Etienne Capoue takes one for the team - as you'd expect - by blocking Ward-Prowse's fierce strike with his face.

For a moment or two, Capoue is laid out on the grass with his arms outstretched before quickly showing signs of movement. He's fine.

Back to the corner... Watford deal with James Ward Prowse's delivery but the Saints midfielder quickly has another chance from a free-kick. Central position, 25 yards...

But before that.... Saints make a double substitution. Sofiane Boufal, over the toe injury sustained by an accident with the leg of his kitchen table, and Shane Long are summoned.

Nathan Redmond, shaking his head in disbelief, and Michael Obefami are hooked.

Saints need a spark. Danny Ings is trying to his best to provide it. The ex-England striker chases down a lost cause and wins his side a corner. Excellent endeavour.

Ah ha! Here's something... more brilliance from Ismaila Sarr. The Watford forward collects the ball on the left flank, skipping and shimmying in-field before lashing a rising shot just over the Saints crossbar.

After taking a while to settle in, the Senegal international is showing signs of why Watford paid £25m for him in the summer...

Not much to tell you from the opening exchanges of the second half. Nothing has happened.