So, frustration for Southampton as they fail to get a winner after Watford substitute Ben Watson is sent off. Many thanks for your company. You can read a match report on this game here.
- Southampton XI: Forster, Cedric, Yoshida, van Dijk, Targett, Romeu, Davis, Ward-Prowse, Tadic, Redmond, Long.
- Watford XI: Gomes, Cathcart, Prodl, Britos, Amrabat, Capoue, Behrami, Guedioura, Holebas, Deeney, Ighalo.
Ten-man Watford hold out for a valuable point.
Seventeen shots for Southampton but only five on target and just the one goal.
Walter Mazzarri has got rid of his suit jacket. The Watford boss is pacing his technical area and is constantly looking at his watch. Two minutes left.
Four minutes of added time.
One-way traffic, as it has been for most of this half, with just a few minutes remaining. If Watford emerge from this with a point they will be celebrating it like a win.
Pierre-Emile Hojbjerg has time and space outside the Watford area but blazes over the bar. Another Southampton chance wasted.
Watford's defence is under severe pressure in the closing stages. Can the 10 men visitors hold out?
Substitute Ben Watson, who has only been on for 12 minutes, is sent off after being shown a straight red card for bringing down Shane Long as he advanced on the Watford goal.
Brilliant work by the hard working Nordin Amrabat ends with a low cross right across the six-yard area but there is no yellow shirt to turn it over the line. Big chance for Watford.
Southampton are on the charge. Can they get a second?
This is turning into a cracker.
Both teams are going for it and there's chances at both ends.
Southampton go close to taking the lead for the first time as Steven Davis gets a head to Dusan Tadic's free-kick and it lands on the roof of the net.
It's been coming and finally Southampton have the equaliser... and what a beauty it is.
Nathan Redmond, on his Premier League debut for the Saints, lashes home a low volley after a corner drops to him inside the area.
First change of the game. No surprise it's Southampton who make it. They need to do something quickly to get back into this.
James Ward-Prowse is replaced by new signing Pierre-Emile Hojbjerg.
So close to a second Watford goal as Jose Holebas gets behind the Saints defence and his curling cross-shot narrowly fails to find the net.
Strong challenge by Valon Behrami sends Dusan Tadic sprawling and brings a promising Southampton move to an end. More frustration for the hosts.
Lively start to the new half by the hosts who are pushing forward. They've won only their second corner while Nathan Redmond narrowly failed to connect with a cross.
Watford get us back under way.
Southampton won their last four Premier League games of last season to seal sixth spot in the table. They are going to have to step it up in the second half.
They've had seven shots but it's been a frustrating start to the season so far.
Here come the teams...
Eddie Howe is at St Mary's Stadium to check out the action. His Bournemouth side entertain Manchester United on Sunday.
A few jeers from the home fans. Watford are good value for their lead
Long-range shot by Cedric Soares forces Heurelho Gomes to beat his attempt away.
Shane Long is receiving treatment after two challenges in quick succession - the second by Craig Cathcart - leaves him sprawled out on the grass. The forward receives generous applause as he climbs back to his feet. Four minutes of additional time signalled by the fourth official.
Southampton are finally coming alive as the clock ticks down to half-time. Nathan Redmond has a go from outside the area but he fails to test Heurelho Gomes.
Not too much from Nathan Redmond so far. Southampton's new £10m winger tries to tee- up a chance for himself just outside the area but ends up playing a stray pass.
Southampton's fans have gone quiet. This is far too comfortable for Watford. The Saints need some inspiration. But where is it going to come from?
There's a stoppage in play while Heurelho Gomes receives treatment for what looks like a hamstring problem. There's a flurry of activity on Watford's bench where second-choice stopper Costel Pantilimon is wondering whether he is going to come on. Gomes carries on for now.
Dusan Tadic ties Watford's defence in knots before setting up Shane Long with a terrific cross but the Southampton striker heads wastefully wide from close range. That was a big chance.
Cedric Soares played in Portugal's Euro 2016 final win over France but he's having an uncomfortable time against Watford.
He's just over-hit a pass which brings a Saints move to an end and is greeted with a chorus of cheers by Watford's travelling fans.
James Ward-Prowse lets fly from 30 yards. It appears to hit a yellow shirt before going behind but no corner is given. Claude Puel has his first argument with the fourth official.
Walter Mazzarri is also wearing a suit with no tie on what is a muggy day at St Mary's He's out his seat demanding more from his Watford players but the Italian will surely be pleased with what he has seen so far.
Former Leicester and Aston Villa forward on Final Score
What is catching my eye is Watford. They seem to be very confident on the ball and once they get into the final third out wide they cross it and they are getting players in the box. It looks a very simple philosophy and they look comfortable playing it.
Etienne Capoue's goal was the first Watford have scored against Southampton since 2009. The Hornets have not beaten the Saints since 2008. Is that about to change?
Watford have had one shot on target - and made it count.
Nordin Amrabat has made a terrific start. He's causing Southampton plenty of problems with his attacking runs down the wing.
Southampton are not comfortable at the back. Watford's tails are up with Troy Deeney and Etienne Capoue causing problems. A second Hornets goal would really ruffle the Saints.
That's Etienne Capoue's first league goal in a Watford shirt. And it's completely changed the momentum of the game. The Saints were bossing it until they fell behind.
Watford take the lead through their first serious attack of the game. Nordin Amrabat's cross into the area is headed back across goal by Troy Deeney and Etienne Capoue blasts into the roof of the net from about 10 yards.
Southampton are stunned.
Southampton are bossing the opening exchanges but no further work for Heurelho Gomes since those two early saves.
So nearly a Saints goal as Dusan Tadic's free-kick is beaten away by Heurelho Gomes. The ball falls to Miguel Britos but instead of hacking it clear the Watford defender incredibly turns the ball back to Gomes who is forced into another save.