Derby County increased the pressure on Jose Mourinho as Scott Carson denied Phil Jones to secure a shock 8-7 penalty shoot-out win over 10-man Manchester United after a dramatic 2-2 draw at Old Trafford in the EFL Cup.
Marouane Fellaini's stoppage-time equaliser gave United – who had Sergio Romero sent off – a second bite, but after 15 successful penalties between the two sides, Jones saw his feeble effort saved by Carson.
The hosts wasted little time before taking the lead in the regulation 90 minutes, as Juan Mata rounded off a lovely early move, but Derby looked capable of troubling United and deservedly levelled early in the second half through Liverpool loanee Harry Wilson's stunning free-kick.
Things got more difficult for United when Romero was dismissed for handball outside his area and Derby capitalised through Jack Marriott, but Fellaini forced a shootout with a last-gasp equaliser.
United were unable to bail themselves out again, however, as Derby scored all of their spot-kicks and edged through when Jones failed from 12 yards.
United went ahead after just three minutes, doing so in style.
Anthony Martial's pass across the edge of the area was backheeled to Jesse Lingard by Romelu Lukaku, and the England midfielder found Mata, who finished with aplomb.
Derby stepped things up after the break and Wilson – who had previously gone close to an equaliser – found the net brilliantly in the 59th minute, picking out the top-left corner with a 30-yard free kick.
The 21-year-old then played a role in Romero's sending off, as the goalkeeper handled when trying to prevent Wilson getting past him.
Derby thought they had won it five minutes from time when Marriott nodded in from close range, but Fellaini headed a deflected cross beyond Carson deep into stoppage time.
The quality in the shootout was high, with all of the first 15 penalties beating Lee Grant – Romero's replacement – and Carson, but the latter dived down to his left to foil Jones and book Derby's passage into round four.
1 - Sergio Romero is the first Manchester United player to receive a straight red card at Old Trafford in any competition since Eric Bailly did so back in May 2017 against Celta Vigo in the Europa League. Bath. pic.twitter.com/EfQ4wFhQJQ— OptaJoe (@OptaJoe) September 25, 2018
What it means: The apprentice defeats the master
Mourinho was facing his former player Lampard for the first time, and although United technically claimed a draw in 90 minutes, there was little doubt which was the better team at Old Trafford.
Even after going behind, Derby looked fearless, brave and full of ideas, attacking United whenever the opportunity came.
In the second half, Derby were even more effective, with Mourinho's pragmatic tactics seeing the hosts struggle before going direct for the equaliser. The second goal flattered United, who ultimately got what they deserved.
No answer to Wilson
Many Derby players enjoyed fine outings, but Wilson was the pick of the bunch. Although he started on the left, the midfielder popped up all over the place, with his movement causing United real problems. He threatened the hosts' goal a couple of times before his gorgeous free-kick and was then key in Romero's dismissal.
Romero leaves United in trouble
In what was his first competitive appearance for United since the final day of last season, Romero had a night to forget. Although he made a couple of important saves, he looked unconvincing with set pieces and was then caught out just after the hour, rushing out of his box and handling the ball as Wilson tried to get around him.
The red card came out, leaving United facing an uphill battle, particularly given his replacement Grant got nowhere near any of Derby's penalties.
United turn their attentions back to the Premier League on Saturday and will hope to bounce back from their 1-1 draw with Wolves by defeating hosts West Ham. Derby will be back in the Greater Manchester area the same day, facing Bolton Wanderers in the Championship.
|Warriors assign Cousins to G League team|
|Barcelona pull out of plan to play LaLiga game in Miami|
|Pochettino to keep an eye on Inter when Spurs face Barcelona|
|Pochettino confirms Walker-Peters set to start against Barcelona|
|Denver Nuggets add free agent Young|
|Topping Group A no magic wand for an easy knockout draw, says Simeone|
|The cake has been made, now we need the cherry - Ancelotti targets repeat at Anfield|
|Lloris braced to face ´one of the best in history´ in Messi|
|Tuchel expects Neymar to face Red Star|
|Foden signs Manchester City deal to 2024|
|It happened to me! - Valverde laughs off Dembele timekeeping|
|´Projecting´ an Argentina return? Messi met with AFA president and Scaloni|
|Erasmus expects to leave head coach role after World Cup|
|Chelsea issue suspensions pending investigation into Sterling incident|
|Kane is extraordinary – Valverde hails reported Barcelona target|
|Man behind Naomi Osaka´s rise wins WTA Coach of the Year|
|England name unchanged Test squad as Willey returns for West Indies ODIs|
|Spalletti: No issue with Icardi watching Superclasico in Madrid|
|Klopp confirms 2013 talks with ´chatty´ Napoli president De Laurentiis|
|Sri Lanka spinner Dananjaya suspended due to illegal action|
|His reaction was just brilliant – Klopp praises Sterling for response to abuse|
|Gomez renewal a ´smart decision´ for both parties – Klopp|
|Magnificent Molinari named European Golfer of the Year|
|Barcelona best option for Frenkie de Jong, insists midfielder´s father|
|Gronkowski on Miami Miracle: ´Got to make that tackle´|
|Tottenham youngster Walker-Peters signs on until 2023|
|Juventus ´more of a family´ than Real Madrid - Ronaldo|
|Kingsley Coman contemplates retirement if injury nightmare continues|
|McVay ´sick´ over offensive failings as Rams coach takes blame for loss|
|Calleja axed as Villarreal coach|
|Kenyan Drake on Miami Miracle: I couldn´t let Gronk tackle me!|
|Ronaldo: I deserved Ballon d´Or, the numbers don´t lie|
|Rugby Australia to make Cheika decision this month|
|England defender Gomez signs new Liverpool deal|
|Ronaldo wants to see Messi follow him to Italy|
|Neymar happy to play in any position for PSG - Draxler|
|Paine insists he is ´fine´ after taking blow to finger|
|Ponzio: River players will be ´idolised´ for Libertadores success|
|Champions League permutations: How Inter, PSG and Liverpool can progress|
|Kohli: India were better and deserved to win|
|Bears shut down Goff, Rams|
|India survive dramatic finish against Australia|
|Klopp calls for electric Anfield atmosphere against Napoli|
|Saints clinch back-to-back NFC South titles, Bears trump Rams|
|Bucks improve to 2-0 against Raptors with win in Toronto|
|Black Caps include Patel for Sri Lanka Tests|
|Maidana: River want Real Madrid clash|
|Cowboys top Eagles in OT behind stellar Cooper display|
|AC Milan evaluating Fabregas signing – Leonardo|
|WATCH: Steelers´ chance at game-tying field goal slips away|
|Hayne will plead not guilty to charges, says lawyer|
|Boca boss Schelotto: The only thing I feel is sadness|
|Cardinals´ Fitzgerald makes NFL history with most receptions for one team|
|River Plate´s Copa Libertadores star Gonzalo Martinez confirms January departure|
|Klopp: I was never worried about Salah´s form|
|Packers QB Rodgers sets NFL record for most passes without an interception|
|World Cup bulking hampered Man United form – Lukaku|
|Leonardo rules out Ibrahimovic Milan return|
|Warriors´ Green to return against Timberwolves|
|I feel for him… we´ll make it work – Butler responds to Embiid´s frustration|
|Torino draw no missed opportunity for misfiring AC Milan, claims Gattuso|
|We´ll always be linked together forever - Wade reflects on playing with James before final match-up|
|O´Sullivan wins record seventh UK title|
|Chiefs secure playoff berth, Saints win NFC South|
|River Plate 3 Boca Juniors 1 (aet, 5-3 agg): Quintero and Martinez clinch Libertadores title in extr|
|WATCH: Chiefs QB Mahomes throws no-look pass|
|Dolphins defeat Patriots on miraculous final play|
|Kizzire eagle snatches QBE Shootout victory|
|AC Milan 0 Torino 0: Donnarumma shines, Cutrone misses late chance|
|Back to the drawing board for West Indies - Chase|