Darren Ferguson expressed his belief in his Peterborough United side as they prepare to take on Sunderland in the League Cup on Tuesday.
The League One outfit have been in impressive form so far in the competition, dispatching Colchester United 5-1 in the first round before thumping Championship side Reading 6-0 at London Road in the second round.
Midfielder Lee Tomlin scored a brace at Colchester before going one better with a hat-trick in the win over Reading to make him the competition's top scorer.
And Ferguson, whose side beat MK Dons on Saturday despite being reduced to nine men, believes that a similar performance to the display against Reading could see them cause an upset at the Stadium of Light.
"It is a Premier League team and I fully believe if we play to our full potential and how we performed against Reading then we have a good chance," he said.
"Sunderland are a good side though, they are at home and will want to progress. It is what it is and we look forward to the opportunity of going to the Stadium of Light."
For Sunderland, the third-round encounter could provide a welcome break after a tumultous weekend that saw them part company with manager Paolo Di Canio.
They made the move on Sunday night after taking just one point from their opening five games to leave them bottom of the Premier League table.
A statement on the club's official website confirmed: "Sunderland AFC confirms that it has parted company with head coach Paolo Di Canio.
"Kevin Ball will take charge of the squad ahead of Tuesday night’s Capital One Cup game against Peterborough United and an announcement will be made in due course regarding a permanent successor.
"The club would like to place on record its thanks to Paolo and his staff and wishes them well for the future."
Ball takes charge of a side who sealed their place in the third round with a 4-2 win over MK Dons after scoring four times in the final 12 minutes to overturn a two-goal deficit.
Sunderland beat Peterborough 2-0 in the FA Cup back in January 2012 when the two sides last met, with Sebastian Larsson and James McClean on target at London Road.
|Coach: K. Ball|
for J. O'Shea 61'
for E. Giaccherini 81'
for J. Altidore 85'
|Mourinho tells Ronaldo: Team honours come first|
|Khedira returns to Juve training|
|Celtic v Qarabag: Champions League return of utmost importance, says Collins|
|Pellegrini: Jovetic had to go|
|Manquillo completes Marseille move|
|Schalke reject Juve´s Draxler bid|
|Blanc: Di Maria deal ´close´|
|Di Santo debut ends in stalemate|
|Fire sign Drogba, trade him to Montreal Impact|
|FIFA and UEFA welcome ruling on third-party ownership|
|Juve kick off title defence against Udinese|
|Stoke sign free agent Afellay|
|Benitez confident Ramos will stay|
|Fenerbahce issue warning to fans|
|UEFA Champions League Preview: De Boer confident Ajax are ready for Vienna test|
|Bility: I am the favourite for FIFA presidency|
|Pienaar to miss start of season|
|Vietnam 1 Manchester City 8: Sterling shines as tourists run riot|
|All-Star Keane relishing Spurs clash|
|Shaun Wright-Phillips joins brother Bradley at Red Bulls|
|Inter 0 Real Madrid 3: Rodriguez stunner caps comfortable win|
|Villa sign Ayew|
|Watford complete Berghuis transfer|
|Robben returns to Bayern training|
|Pulis anxious to make West Brom additions|
|David Luiz eager to welcome ´fantastic´ Di Maria|
|Fernando injury free ahead of new campaign|
|Hummels blames weight issues for poor season|
|Defoe hoping for early Sunderland goals|
|Depay hints at identity of ´surprise´ United striker|
|Tigres UANL v River Plate: Hosts look to bounce back and make history|
|Crespo set for Villa move|
|Terry: I would never join a Premier League rival|
|Van Gaal coy on United future|
|Romero to cover potential De Gea exit - Van Gaal|
|Uruguay win men´s football gold at Pan Am Games|
|Pirlo thanks New York City fans for ´beautiful´ welcome|
|Mexico capitalised on ´the mistakes we made´ - Schafer|
|Herrera delighted with Mexico display|
|MLS Review: Whitecaps build happy home, Pirlo debuts|
|Guardado wins Golden Ball at Gold Cup|
|NZF confirms Olympics disqualification appeal|
|Jamaica 1 Mexico 3: CONCACAF giants complete form turnaround|
|New York Red Bulls 2 Benfica 1: Another scalp for MLS side|
|Romero signs with United|
|Moghreb Tetouan 1 Al Hilal Omdurman 1: Visitors go top|
|Van Gaal rules out Ronaldo bid|
|Pique open to Barca captaincy|
|Pirlo makes MLS bow in thrilling NYC victory|
|Coutinho and Can return for Liverpool U21s|
|Walcott deal ´closer´, says Wenger|
|Arsenal 1 Wolfsburg 0: Walcott the match-winner in Emirates Cup finale|
|Di Santo links up with Schalke squad|
|Lukaku treble sinks Hearts|
|Benitez again refutes Ronaldo rift rumours|
|Pepe sure Ramos will stay at Real|
|City target De Bruyne named Germany´s Player of the Year|
|Montero spoils McCarthy´s Palace debut|
|Lyon 0 Villarreal 2: Soriano, Baptistao seal comfortable win in Emirates Cup|
|Wijnaldum on target as Newcastle are held|
|Mourinho: Rivals trying to buy the title|
|Jovetic set for Inter medical|
|RFS in ´denial´ over racism issue, claims Football Against Racism in Europe|
|Salah not staying at Chelsea - Mourinho|
|Mbemba closes in on Newcastle switch|
|Ibrahimovic: Di Maria will take PSG to another level|
|Delph: Don´t compare me to Pogba|
|Dundee United sign Sneijder|
|Morata relishing new-look Juve strikeforce|
|Strachan "not scared" of England after World Cup qualifying draw|
|Brazil claim football, basketball, handball gold in Toronto|
|Lampard´s debut delayed again, Pirlo ready to play|
|Mourinho open to Premier League matches in US|
|MLS Review: Texas unites to hurt Galaxy|
|Luis Enrique: United can emulate Barca revival|
|Van Gaal singles out Januzaj, hails United´s forwards|
|Blanc still hopeful PSG will sign Di Maria|
|Irish international Cunningham seeks Bristol City exit|
|Italy embracing Spain challenge in World Cup qualifying|
|Dos Santos brothers in doubt for Gold Cup final|
|PSG 1 Chelsea 1 (aet, 5-6 on penalties): Courtois clinches victory for Mourinho´s men|
|United States 1 Panama 1 (aet, 2-3 on penalties): Mejia denies hosts third|
|ES Setif 1 Al Merreikh 1: Sudanese deny title-holders at home|
|CONCACAF admit referee errors in Gold Cup semi-final|
|Dutch favourites in Group A - Deschamps|
|Barcelona 1 Manchester United 3: Rooney, Lingard and Januzaj maintain winning start|