Six of the most humiliating defeats to rivals: Man United-Man City, Barca-Real Madrid and more…

Man Utd 1 Man City 6 scoreboard Oct11
Ahead of Saturday’s Manchester derby we look back on six occasions when teams losing to one of their biggest rivals wasn’t just painful, it was downright embarrassing.
Manchester United 1-6 Manchester City
An iconic game for many reasons, but also a good starting point considering this match took place ten years and one day before Manchester United were humbled at home by the Reds.
Man United boss Sir Alex Ferguson called it "our worst ever day" but it will be up there with the best for the City faithful.
Barcelona 5-0 Real Madrid
Although Jose Mourinho described the defeat not as a humiliation, just disappointing, losing the El Clasico by a five-goal margin was most certainly embarrassing.
Los Blancos sat top of the La Liga standings prior to the meeting and were looking to make a statement, but instead it was Pep Guardiola's men who turned on the style at Camp Nou.
Barca took the lead in fortunate circumstances. Andres Iniesta's coss-cum-shot evaded Marcelo's slide tackle to hit Xavi on the backside and the cultured midfielder waited for the ball to sit up before calmly side-footing it into the net over a despairing Iker Casillas.
Barca's tiki-taka created the second, with Pedro finishing off a fine move.
First, Cristiano Ronaldo and Guardiola were involved as the Barca manager wouldn't let the Portuguese player take a quick throw-in. Then Ricardo Carvalho was fortunate to escape a red card after appearing to elbow Lionel Messi in the face.
David Villa's two goals in three minutes then wrapped up the game for Barcelona.
Oh, and it wouldn't be an El Clasico without a red card being brandished. Unsurprisingly, it was Sergio Ramos who received his marching orders having pushed Spain team-mate Carles Puyol in the face.
Lazio 1-5 Roma
Roma only lost twice in 2001/02 season but still were unable to defend their Serie A title. However, the highlight of their campaign was undoubtedly a 5-1 victory over fierce city rivals Lazio in the Derby della Capitale.
Fenerbahce 6-0 Galatasaray
Chelsea 6-0 Arsenal
It's fair to say Arsene Wenger's 1,000th match in charge of the Gunners did not go to plan at Stamford Bridge.
The 2014 meeting of the west London rivals was notable for the controversial sending off of Arsenal's Kieran Gibbs in a case of mistaken identity. Alex Oxlade-Chamberlain handled on the line to deny Chelsea a goal, but referee Andre Marriner dismissed his team-mate Gibbs.
Two early Chelsea goals did not help Arsenal's cause, before the penalty scandal led to Eden Hazard scoring from the spot to put the game well out of reach with only 17 minutes played.
Brazilian attacking midfielder Oscar then added a double to put the Blues 5-0 to the good in the 66th minute. Five minutes later, Mohamed Salah scored his first league goal for Chelsea after replacing Oscar.
Celtic 5-0 Rangers
Not the biggest scoreline on show, but this 2018 defeat was such a crushing blow for Rangers as it meant their Old Firm rivals retained their Scottish Championship crown.
Their seventh successive league title cemented Celtic's dominance in Scotland and put them on the brink of winning back-to-back domestic trebles - Celtic would secure their third trophy of the season just a couple of weeks later with a 2-0 win over Motherwell in the Scottish Cup final.
Odsonne Edouard stole the headlines, netting twice. Brendan Rodgers' team showed no mercy and a goal from James Forrest put Celtic 3-0 up at half-time.