Swansea City pulled off a shock by winning at Manchester United for the first time in their history in the FA Cup third round on Sunday.
Michael Laudrup's side took advantage of United being reduced to 10 men with 10 minutes remaining to record a maiden victory at Old Trafford courtesy of Wilfried Bony's last-minute winner.
Swansea went ahead on 12 minutes with a superb lofted effort from Wayne Routledge, but United responded quickly through Javier Hernandez's close-range finish.
United full-back Fabio came on as a 76th-minute substitute for Rio Ferdinand, but the Brazilian lasted just four minutes before receiving a straight red card for a lunge on Jose Canas.
And Laudrup's men made the most of the extra man, as Bony headed home Routledge's cross in the 90th minute to earn a tie at Birmingham City, Bristol City or Crawley Town and pile the misery on United manager David Moyes.
Pressure also continued to mount on West Ham boss Sam Allardyce, as his side's Premier League form continued with a 5-0 thrashing by Championship outfit Nottingham Forest at the City Ground.
Jamie Paterson starred for Billy Davies' men with a second-half hat-trick - his first goals for the club.
Djamel Abdoun opened the scoring on 12 minutes from the penalty spot, and Forest's lead was doubled midway through the second half by Paterson.
The 22-year-old confirmed the hosts' superiority on 71 minutes with a deflected effort, before completing his treble with 11 minutes remaining.
Andy Reid then netted a fifth in injury time to set up a fourth-round encounter with Ipswich Town or Preston North End.
Liverpool face a visit to Bournemouth or Burton Albion in after avenging last year's shock fourth-round defeat to Oldham Athletic with a laboured 2-0 triumph over the same opponents at Anfield.
Iago Aspas volleyed home the opener in the 54th minute, his first goal for the club, and Brendan Rodgers' men ensured their progression when Raheem Sterling's strike deflected in off James Tarkowski in the 82nd minute.
Jose Mourinho's Chelsea, meanwhile, overcame a tricky encounter with Derby County at Pride Park by battling to a 2-0 success.
After keeping Chelsea at bay for the opening 45 minutes, Derby's resistance was broken when John Obi Mikel marked his 300th appearance for Chelsea with the opener on 66 minutes, the Nigerian rising highest to head home Willian's free-kick.
Four minutes later, the tie was essentially put to bed courtesy of Oscar's powerful drive from the edge of the penalty area, as Chelsea set up a meeting with fellow Premier League outfit Stoke City in round four.
In other matches, Sunderland put their Premier League woes behind them to defeat League One side Carlisle United 3-1 at the Stadium of Light, while Plymouth Argyle overcame a two-goal deficit to earn a replay with a battling 2-2 draw at Port Vale.
|New deals for Moore, Schlupp|
|Litex Lovech 3 Veris 0 (3-0 agg): Bulgarians through to second round|
|Valencia loan Fede to Cordoba|
|Stoke closing in on Bojan|
|Inter still hopeful of Jovetic capture|
|Finalists dominate Golden Ball nominees|
|Celtic end Austria tour unbeaten|
|Rizzoli appointed World Cup final referee|
|Oier joins Granada|
|Escriba extends Elche agreement|
|Newcastle have agreement for Cabella, says Nicollin|
|Scolari: We have to move on|
|Roma complete Emanuelson deal|
|Alex pledges to improve Milan|
|Di Maria doing everything he can, says agent|
|Villa give Richardson a Premier League return|
|Sabella ´to step down´ after World Cup final|
|Van Gaal eyes ´unbeaten´ campaign|
|Suarez to take case to CAS|
|Germany have same spirit as in 1990, says Beckenbauer|
|´Quite clear Suarez wanted to leave´ - Liverpool fanzine|
|Southampton closing in on Pelle deal - Koeman|
|Suarez, Ronaldo, Bale and more: The Premier League talent drain|
|Augsburg capture Caiuby|
|Gerrard lauds departing Suarez|
|Andrade delighted at Benfica return|
|No Bony talks with Liverpool - Swansea|
|Lahm: Experience will be key|
|FIFA World Cup Preview: Brazil v Netherlands|
|Suarez departs Liverpool with ´heavy heart´|
|Liverpool did everything to keep Suarez - Rodgers|
|Suarez to sign for Barca|
|Boyce: Referees not told to be lenient|
|Sanchez reveals Wenger admiration|
|Flick staying secretive on Messi plans|
|Determined Dyche aims to complete more deals|
|Matri joins Genoa on loan|
|Valderrama talks up James potential|
|Aguero: Argentina are World Cup underdogs|
|Everton in talks over Traore return|
|Lambert tipped to prise open defences|
|Thauvin hails Bielsa impact at Marseille|
|Zico: Time for Scolari to go|
|Klopp eager for defensive improvement|
|Arsenal to run the rule over Fathi|
|Chamakh signs news Palace deal|
|Neville set to learn United fate|
|Fiorentina swoop for Brillante|
|Navas set to join Bayern|
|Neymar rejects agent´s anti-Scolari Twitter tirade|
|Allegri undecided on Italy job|
|Fernando idolises City team-mate Toure|
|Arteta: FA Cup will inspire Arsenal´s Premier League tilt|
|Evergrande confirm Gilardino signing|
|Howedes calls for team effort to stop Messi|
|Kuyt: Van Gaal can succeed at United|
|Argentina fined for player no-show|
|Neymar: ´I could be in a wheelchair´|
|Mascherano: I tackled doubts to block Robben|
|Zaccheroni: I leave Japan in a good spot|
|Aguero: Argentina ready to give everything|
|UEFA Europa League Review: Gothenburg leave it late, Sillamae stun Honka|
|Klose lauds Ronaldo after scooping record|
|Iran refute Susic claims|
|Fernandez named Deportivo boss|
|Argentina have no chance, says Robben|
|Hierro to replace Zidane as Real first-team coach|
|Rhodes signs new Rovers deal|
|Arsenal complete Sanchez swoop|
|Inzaghi backs under-fire Balotelli|
|Defeat has overshadowed display - Vlaar|
|Maradona: Germany full of themselves|
|Barry hoping for England recall|
|Green extends QPR stay|
|Shanghai Shenhua 1 Guangzhou Evergrande 2: Rong leaves it late in dramatic win|
|Germany hope for Brazilian support|
|Torino striker Cerci in demand|
|FIFA critcised following Mascherano incident|
|Bernat happy at Bayern despite bad memories|
|Giggs backs Van Gaal to thrive at Old Trafford|
|Tadic can fill Lallana void - Koeman|
|New five-year deal for Nasri|
|Barcelona release injury-hit Cuenca|
|Suarez appeal rejected|
|La Decima a reflection of Di Stefano - Perez|
|Buoyant Mazzarri eager for Inter success|
|Mandzukic joins Atletico|
|Van Gaal criticises third-place play-off|
|Halilhodzic yet to decide future|
|Mandzukic eager for Simeone link-up|
|Davies hoping for Hull deal|
|Poyet hopeful over Altidore fitness|
|Diego close to ´dream´ Fenerbahce move|
|Inter loan out youngsters|
|Fired-up Cole can inspire Villa, claims Lambert|
|Hughes hailed for winning over Brit doubters|
|Hajrovic signs for Bremen|
|Hull can buck Europa League trend, says Meyler|
|Mertesacker talks up German chances|
|Swansea reveal Tottenham contact over Davies, Sigurdsson|
|Lloris pens five-year deal at Tottenham|
|Fernandinho: ´The pain is big´|
|MLS Preview: Portland aim for swift revenge against Seattle|
|Sabella: Germany have an advantage|
|Second Argentine journalist dies in Brazil|
|Aguero: Argentina defied critics|
|Impressive Mascherano thrilled with final´s berth|
|Zuniga offered protection by Colombia|
|Germany vowed not to ´humiliate´ Brazil|
|Hong resigns from South Korea post|
|Third-choice Vlaar ´wasn´t nervous´|
|Van Gaal: I wanted Krul in the shootout|
|Argentina: Key factors in reaching the final|
|Sabella revels in semi-final win|
|Proud Robben feels pain of World Cup exit|
|FIFA World Cup: Netherlands 0 Argentina 0 (after extra time, 2-4 on penalties)|
|Susic signs two-year extension with Bosnia-Herzegovina|