Manchester United suffered a stinging 2-1 home defeat by Swansea City in the FA Cup third round yesterday as their former fortress of Old Trafford was ransacked for the fifth time this season.

Reduced to 10 men for the closing stages after Fabio was sent off, Swansea’s battering ram striker Wilfried Bony climbed high to head home a powerful 90th-minute winner and leave United boss David Moyes to face questions about his management.

Another boss under pressure is West Ham United’s Sam Allardyce whose woes intensified after the Premier League club were thrashed 5-0 by second tier Nottingham Forest.

Forest’s Jamie Paterson netted a hat-trick in the humiliating rout, but the spotlight was on Allardyce who was accused of waving the white flag by making nine changes to his starting line-up with an eye on the League Cup semi-final at Manchester City on Wednesday.

Chelsea showed their fellow Londoners how to negotiate a potentially tricky Cup tie in the east Midlands, winning 2-0 at second-tier Derby County.

Liverpool avenged last season’s Cup defeat by Oldham Athletic, winning 2-0 at Anfield with Iago Aspas scoring his first goal for the club, and Sunderland also came through 3-1 against Carlisle.

With Manchester United’s former boss Alex Ferguson sitting in the stands, they looked a far cry from the side that the Scot led to the Premier League title last season.

A chorus of boos rang around the ground as Swansea became the fourth team to walk away victorious in United’s last six home encounters in all competitions, a run of results that would have been almost unthinkable under Ferguson.

“We were a bit unlucky to lose but probably did not do enough to win in the end,” Moyes told BT Sport.

“If you lose games at any club it’s a big deal but at Manchester United it’s even bigger. We have got a big game on Tuesday (League Cup semi-final first leg against Sunderland), we must get the players ready for that.”

West Ham, 19th in the top flight and facing a relegation battle, were undone by a Nottingham Forest side who scored early in the first half with a cheeky Djamel Abdoun penalty before Paterson netted three in the second half and Andy Reid added a fifth.

Forest’s local rivals Derby had little joy against Chelsea, who named a strong side with enough class to dominate their lower league opponents.

John Obi Mikel put them ahead after 66 minutes and Oscar added a second from the edge of the area to make the game safe and set up a fourth-round tie at home to Premier League Stoke.

Liverpool suffered a painful defeat by Oldham in the fourth round last season, a reverse manager Brendan Rodgers described as the lowest point in his Liverpool career.

The potential for another embarrassing defeat was reduced nine minutes into the second half when Aspas steered home Raheem Sterling’s cross and James Tarkowski inadvertently redi-rected a Sterling shot into his own net to double the lead.

Sunderland were briefly made to sweat when Adam Johnson’s opener was cancelled out by Carlisle’s Matty Robson just before halftime.

The second half was just five minutes old, however, when a comical own goal restored the Premier League side’s lead, with Sean O’Hanlon sliding in to divert Johnson’s cross into the net.

El Hadji Ba made the game safe on 90 minutes when he side-footed home from close range.

The lower league clash between Port Vale and Plymouth ended in a 2-2 draw and will go to a replay.

Fourth round draw
Sunderland vs Kidderminister/Peterborough; Bolton Wanderers vs Cardiff; Southampton vs Yeovil; Huddersfield vs Charlton/Oxford; Port Vale/Plymouth vs Brighton; N. Forest vs Ipswich /Preston; Southend vs Hull City; Rochdale United vs Macclesfield/Sheffield Wed.;

Arsenal vs Coventry; Stevenage vs Everton; Wigan/MK Dons vs Crystal Palace; Chelsea vs Stoke City; Blackburn/Manchester City vs Bristol City/Watford; Bournemouth/Burton vs Liverpool; Birmingham/Bristol Rovers/Crawley vs Swansea; Sheffield Utd vs Norwich/Fulham.

Ties to be played on weekend of Jan. 25.

Results

N. Forest 5
Abdoun 12 pen; Paterson 65, 71, 79; Reid 90;
West Ham 0

HT: 1-0. Att: 14,397.

Sunderland 3
Johnson 34; O’Hanlon 50og; Ba 90;
Carlisle 1
Robson 43;

HT: 1-1. Att: 21,973.

Derby 0
Chelsea 2
Mikel 66; Oscar 71;

HT: 0-0. Att: 32,110.

Liverpool 2
Aspas 54; Tarkowski 82og;
Oldham 0

HT: 0-0 Att: 44,102.

Port Vale 2
Tomlin 15; Pope 36;
Plymouth 2
Reid 51; Purrington 74;

HT: 2-0. Att: 5,511.

Man. United 1
Hernandez 16;
Swansea 2
Routledge 12; Bony 90;

HT: 1-1. Att: 75,000.
Red card: Fabio (MU) 80.