Arsenal kept alive their hopes of a top-four Premier League finish as second-half goals from Alexis Sanchez and Olivier Giroud earned victory at Southampton. After a dull first half, Sanchez produced a moment of magic to open the scoring when the Chilean wrong-footed two defenders in the box before calmly slotting home. Substitute Giroud then made the win safe by nodding in from close range minutes after coming onto the pitch. Mid-table Southampton rarely threatened. Their best chance came in the first half when Manolo Gabbiadini forced a fine save out of Petr Cech from close range, and they stay 10th.

The win means Arsenal move above Manchester United into fifth, three points behind fourth-placed Manchester City. An awful run of form from January until early April had seriously threatened to end Arsene Wenger's record of securing a top four finish in every season he has had at Arsenal. However, four wins in their six games prior to the trip to St Mary's had given hope that the season would not peter out. In what was a must-win game, Arsenal's players initially failed to rise to the challenge. They were ponderous in possession and lacked bite in attack. Too often they played passes square just inside the Southampton half before gifting possession back to the hosts when they approached the final third.

But in Sanchez they possess a player capable of producing something from nothing and that is exactly what he did midway through the second half. His goal, which came after he sold two Southampton players a dummy to give himself a clear shot on goal, visibly relaxed Arsenal and from then on they played with confidence and freedom, allowing them to open up the hosts for a second time when Giroud headed in Aaron Ramsey's cross. Victory not only moves Arsenal, who face Chelsea in the FA Cup final later this month, to within one win of Manchester City, but also four points behind Liverpool, who have played a game more.

In a season that has seen protests against Wenger and some fans calling for the Frenchman to leave, the possibility that they could finish with FA Cup success and a place in the top four is a very real one. Southampton boss Claude Puel's long-term future at the club is reportedly uncertain, with the Frenchman yet to show signs of taking the club forward since replacing Ronald Koeman in the summer. Saints did reach the final of the League Cup but have been firmly ensconced in mid-table in the Premier League this season, a disappointment having finished sixth last year. The Gunners brushed aside Southampton 5-0 in the FA Cup in January and the hosts never looked like gaining revenge in this fixture.

Once again, Southampton were weak in attack. They had two shots on target in this game and have now managed just 12 shots on target across their last six Premier League games. With Saints struggling for goals and key players like defender Virgil van Dijk said to be attracting interest from other clubs, Puel - if he is still at the club - faces a challenging summer of improving the squad to get them moving in the right direction once again.