43' Ward-Prowse understandably goes straight for goal and isn't too far away with a curl towards the top left corner. Southampton are looking good just before the half-time break.
42' Southampton get another chance to test Leno from a set-piece as Pepe clumsily barges over Bertrand in an aerial challenge. The foul is near the left corner of Arsenal's box.
40' Southampton are looking assured at the moment, although they're still vulnerable to the odd error. Bednarek anticipates Willian's run down the left and successfully buys a throw-in off the Brazilian.
38' Southampton hassle Arsenal in their own half again, eventually forcing a chance for Ings. Ings can't get any power on the effort though and it bounces safely through to Leno.
36' Pepe picks up the ball from Nketiah's darting run and smashes a shot off Stephens. Arsenal try to move it over to Cedric arriving at the far post but the pass isn't right.
35' Meanwhile. Southampton have a corner as Holding blocks Armstrong's shot. Ward-Prowse's delivery this time isn't the greatest and goes out for an Arsenal goal-kick. It happens.
34' More on Gabriel's own goal. That was the first goal Arsenal have conceded since Tammy Abraham’s strike for Chelsea on Boxing Day, ending the Gunners’ run of 508 minutes without conceding. Arsenal may have improved of late but they still look emotionally frail from their prolonged poor spell.
33' Walker-Peter gets in front of Willian and goes down under the Brazilian's challenge. The passage of play ends in a Southampton throw-in which Walker-Peters takes.
31' Forster and his defenders play things a little too carefree at the back, forcing Forster to smack the ball off the onrushing Nketiah for a goal-kick. Neither side is afraid to press the other in possession which is fun to see.
29' The corner comes in and Bertrand's ambitious shot from range ends predictably in failure. Still, Southampton are starting to bully Arsenal whose heads have dropped a little since going behind.
28' Ings spots an opportunity in the box and goes for it on the half-volley. It deflects off Bellerin and out for a Southampton corner.
27' Gabriel is the first Arsenal player to score an own goal in the FA Cup since the former Southampton midfielder Alex Oxlade-Chamberlain against Sunderland in February 2012. So now you know.
26' Arsenal are unlucky to be behind as there's been little to divide these two teams so far, but Southampton have picked up the pace in the last few minutes. Ward-Prowse has a pop from distance and his shot swerves wide of the top right corner. Hasenhuttl claps his approval.
23' The ferocity of Southampton's forward press is a sight to behold. It forces a turnover in possession in Arsenal's defensive third and...
22' Southampton successfully intercept an Arsenal attack but can't get forward quickly enough to mount a threat of their own. Eventually the hosts force a throw-in down the left off Bellerin.
20' Cedric does a great job of shielding the ball from Walcott, going down only to swivel back up and fire in a cross. It goes out of play, but the ex-Saints man has started this game well.
18' Martinelli beats Walker-Peters to get into the box. Bednarek soon comes across to help his teammate out.
17' Ings looks to combine with Adams but can't find his strike partner. Ings instead lays off to Walcott who shoots wide of goal from range. This has been quite an even game so far.
16' Walker-Peters gives Arsenal a free-kick down their left. It somehow finds Martinelli all alone in the box after his clever run from deep but the Brazilian teenager can't get his feet together to strike it cleanly. Forster blocks and Southampton clear.
14' Chance for Southampton! Adams picks up the ball down the right and darts inside, beating Gabriel as if he isn't there, before firing straight at Leno. Leno gets low to tip the shot aside.
12' Martinelli cuts inside to cannon a shot against a defender. Willian fires in a low cross from the right but Stephens is in the right place to intercept. Arsenal are having a nice spell of pressure which ends when Cedric lets fly over the crossbar.
10' Pepe chases after a searching ball from deep and pressures Bertrand to knock the ball out for Arsenal's first corner of the game. Pepe's corner is cleared easily at the near post by Southampton.
8' Arsenal get a free-kick as Armstrong is overeager in challenging for a cross in the box. Adams is hobbling a little but the Southampton striker should be able to shake off whatever niggle he's picked up.
6' Arsenal enjoy a decent spell of possession for the first time so far. Xhaka looks to find Cedric out on the left flank but the former Southampton full-back can't keep the pass in play.
5' This is a good start by Southampton. Ward-Prowse spots Leno off his line and tries to catch him out by curling the corner towards goal at the near post. Leno gets it away with the help of the woodwork and Southampton get a third corner which Arsenal this time clear.
4' Southampton have their first corner of the game as Bertrand's cross is nodded out of play. Ward-Prowse swings it in and Ings makes contact at the near post. It deflects off Nketiah for another Saints corner.
3' Ward-Prowse drops a tantalising ball in behind Arsenal's backline but Arsenal's keeper Leno races of his line to claim it.
2' Southampton get an early free-kick as Gabriel elbows Ings out of the way of the ball, catching the striker in the face. Ward-Prowse, the Saints' set-piece specialist, is of course eyeing this up.
1' Southampton get this FA Cup fourth round tie started!
The two teams are out on the pitch on a bright, cold day in Southampton. Southampton are wearing their usual red, white and black home colours. Arsenal are in their dark navy third strip.
Southampton have won just one of their last nine meetings with Arsenal in all competitions. However, they should really have beaten the Gunners in their last meeting, a 1-1 draw at the Emirates just over a month ago. Will Southampton see off Arsenal or will Arteta's team continue their recent revival?
Southampton make six changes to the team that saw off Shrewsbury Town in their third round match this week. Ings' return to the fray after injury and a positive COVID-19 test is particularly good news for the Saints. There are seven changes to Arsenal from their 3-0 win over Newcastle midweek. Their loanee goalkeeper Ryan makes the bench while Pierre-Emerick Aubamayang misses out for personal reasons.
SUBS: Joseph Willock, Calum Chambers, Bukayo Saka, Runar Alex Runarsson, Alexandre Lacazette, Mat Ryan, Ainsley Maitland-Niles, Thomas Partey, David Luiz.
ARSENAL (4-2-3-1): Bernd Leno; Hector Bellerin, Rob Holding, Gabriel Magalhaes, Cedric Soares; Mohamed Elneny, Granit Xhaka (c); Nicolas Pepe, Willian, Gabriel Martinelli; Eddie Nketiah.
SUBS: Shane Long, Daniel N'Lundulu, Jake Vokins, Alexandre Jankewitz, Harry Lewis, Kgagelo Chauke, Yan Valery, Caleb Watts, Kayne Ramsay.
SOUTHAMPTON (4-4-2): Fraser Forster; Kyle Walker-Peters, Jan Bednarek, Jack Stephens, Ryan Bertrand; Stuart Armstrong, Ibrahima Diallo, James Ward-Prowse (c), Theo Walcott; Che Adams, Danny Ings.
Arsenal have won all four of their previous FA Cup ties against Southampton, going on to lift the trophy on the last three occasions in 1979, 2003 and 2017. The Saints are arguably the better side at the moment though so this should be a fascinating game. An away trip to Wolves in the fifth round awaits the victors. Let's do this!
Southampton and Arsenal will both fancy their chances of progressing to the next round of the FA Cup with these two teams arriving at this game in good form. Ralph Hasenhuttl's Saints are ticking over nicely, while the Gunners have rallied of late under Mikel Arteta.
Hello! Welcome to our live text commentary of this FA Cup fourth round tie between Southampton and Arsenal at St Mary's Stadium.
