Oxford 3-2 Swansea: Kemar Roofe the FA Cup hero

Two goals from Kemar Roofe helped Oxford United to a 3-2 victory over Premier League side Swansea City in the FA Cup third round.

The League Two outfit possessed plenty of quality in their play and came from behind to beat the Swans, who took the lead through Jefferson Montero.

A Liam Sercombe penalty got Oxford level just before half-time before Roofe took centre-stage with two well-taken goals.

Roofe has now scored 15 goals this season and has been previously linked with a £1.5m move to Newcastle United. 

Bafetimbi Gomis gave Swansea hope late on but Oxford held on, meaning Swansea become the first Premier League team this season to be knocked out by lower league opposition.

Oxford came into the game losing just one of their last 16 games in all competitions and the side who are third in England's fourth-tier started very confidently.

Meanwhile, Swansea, who made 10 changes to the team that lost at Manchester United, looked fragile as Alan Curtis took charge of his first game since being officially appointed Swansea boss.

That said, Swansea were a threat going forward and Montero could have given them the lead a bit earlier than he did but he blazed over the bar from 10 yards after a clever pull back from Marvin Emnes.

Swans goalkeeper Kristoffer Nordfeldt had said before the game he wanted a quiet match between the sticks but he was busy from the outset, tipping away a Ryan Taylor header on 16 minutes.

Oxford were doing all the pressing, but fell behind on 22 minutes to a goal that was dripping with Premier League quality.

Montero jinked inside, played the ball to Emnes, who skilfully back-heeled the ball back to Montero. He took one touch and then cheekily flicked the ball with his heel into the bottom corner from eight yards.

Michael Appleton's team never lost their swagger though and both the lively Chris Maguire and Roofe tested Nordfeldt with a couple of forthright snapshots.

Swansea needed to get in and reorganise, but Oxford kept coming and won a penalty just on the stroke of half-time.

Kyle Bartley recklessly went to ground in the box and Maguire had the quickness of mind to shift the ball away and take the contact. Sercombe stepped up and thrashed the penalty down the middle.

Roofe then came alive. 

He began his career with West Brom but failed to feature for the Premier League side, leading to loan spells at Víkingur Reykjavík, Northampton, Cheltenham, Colchester and Oxford, before joining the League Two team permanently in the summer.

Stepping in from the left-flank, he opened up his body and whipped a fantastic effort into the far corner from the edge of the area just after the break.

With the crowd now rocking at the Kassam Stadium, Roofe took his reputation to the next level by grabbing his second goal 10 minutes later.

Oxford broke quickly from a Swansea corner and Maguire slid in Roofe, who danced past the final Swansea defender and finished past Nordfeldt.

Although Swansea were becoming frustrated - picking up three bookings in the first 10 minutes of the second-half - they regained composure and got back into the game on 65 minutes.

Jack Cork picked out Gomis in acres of space in the box and the striker grabbed just his second goal in his last 16 games with a cool finish into the bottom corner.

The goal should have provided the platform for Swansea to build some forward momentum in the closing stages - but it never materialised.

Montero was denied by a brave Sam Slocombe save and Gomis had a shot blocked away by David Mullins, but Oxford always looked in control of their destiny ahead of Monday's fourth round draw.