Chelsea 1-1 Southend
A 90th minute goal from Peter Clarke earned League One Southend a shock third-round replay against Chelsea.
Salomon Kalou opened the scoring on 31 minutes when he rose unchallenged to head in Frank Lampard's corner.
Didier Drogba twice failed to find the net when put clean through, while Juliano Belletti saw his header cleared off the goal-line by Johnny Herd.
The Blues were made to rue their misses when defender Clarke popped up inside the area to head in a long throw-in.
Moments earlier, Clarke sent a warning to last season's Champions League finalists when his header from Herd's cross bounced off the top of the crossbar.
The Shrimpers will be delighted having converted one of their two clear-cut chances, a mood which will be in stark contrast to Luiz Felipe Scolari's side who should have romped to victory.
Drogba was put through on goal as early as the 10th minute but dwelled too long on the ball allowing Anthony Grant to produce a superb tackle to deny the Ivorian.
And a few minutes later, the striker shot wide with just Steve Mildenhall in the visitors' goal to beat.
Chelsea pushed hard for a second goal after the break, with Mildenhall called into action again to stop Drogba's effort, before the keeper was was forced to punch clear off the head of Ricardo Carvalho.
He could do nothing to prevent Belletti's header creeping into the net, but fortunately for the shot-stopper, his team-mates and the travelling fans, Herd was on hand to clear off the line.
That interception proved crucial to Southend, 13th in League One, when Clarke nodded in at the far post to set up a Roots Hall replay on Wednesday 14 January.
Chelsea: Cudicini, Ferreira, Carvalho, Ivanovic, Ashley Cole, Belletti, Lampard, Mikel, Joe Cole (Di Santo 84), Kalou (Sinclair 87), Drogba.
Subs Not Used: Hilario, Mineiro, Anelka, Mancienne, Sawyer.
Booked: Mikel, Carvalho.
Goals: Kalou 31.
Southend: Mildenhall, Sankofa, Clarke, Barrett, Herd, Grant, Christophe (Moussa 74), McCormack, Stanislas, Barnard (Freedman 75), Revell (Laurent 75).
Subs Not Used: Joyce, Francis, Betsy, O'Keefe.
Booked: McCormack, Grant.
Goals: Clarke 90.
Att: 41,090
Ref: Stuart Attwell (Warwickshire).
http://news.bbc.co.uk/sport2/hi/football/fa_cup/7803244.stm----------------------------------------
Defeat was indefensible - Hughes
Manchester City manager Mark Hughes described his side's shock FA Cup third-round exit at the hands of Nottingham Forest as "indefensible".
Championship strugglers Forest were worthy winners with goals from Nathan Tyson, Robert Earnshaw and Joe Garner.
Hughes said: "I wouldn't defend it, because it's indefensible. We are disappointed with the performance."
In insisting he was the right man for the City job, Hughes added: "I know exactly what is needed here."
Forest, hovering one place above the Championship relegation zone on goal difference, sacked manager Colin Calderwood on Boxing Day after defeat to Doncaster.
Now it is Hughes who looks increasingly under threat after Forest's caretaker manager John Pemberton masterminded a famous win as new boss Billy Davies, who takes charge on Monday, watched from the stands.
Hughes has so far been backed by the club's Abu Dhabi-based owners despite a disappointing start to the season, but he will undoubtedly feel the heat after a poor display.
The Welshman admitted his side had been second best to the visitors.
"They showed more desire and energy in their play. They forced us into errors and took their chances," he said.
"I didn't expect the other team to show more desire but I am just being honest."
Hughes, who has presided over just six Premier League victories since succeeding Sven-Goran Eriksson in the summer, pleaded for more time to develop the team, currently 13th in the league.
"We know where we are in development terms and we know where we need to go. We know the areas of the squad we have to strengthen and we will try to do that," said the former Wales boss.
"It is not going to happen in this window, or even two or three. We need more time.
"I am not telling anyone anything they didn't see themselves. I have known the frailties in the team from day one."
City were without Brazilian playmaker Robinho and the influential Stephen Ireland but nevertheless fielded a side many would have expected to ease to the fourth round.
The home side suffered a serious setback in the 18th minute when Shaun Wright-Phillips, lively in the opening stages, was forced from the field with a hamstring injury.
From that point onwards matters quickly deteriorated for the home side.
"You need leaders, people who drive the game and affect it in a positive way," said Hughes, whose players were booed by the home fans.
"I'm concerned with the collective showing of the team. Without the shining lights of the season so far, like Robinho, Shaun and Stephen, we looked lacking.
"We've possibly relied too much on those players and allowed them to carry the team and without them we weren't good enough.
"If we have more than one, two or three players below their best then we struggle to win games. We have shown that throughout the season."
Pemberton described Forest's victory as "dream stuff".
"A massive amount of credit must go to the players, they were unbelievable and we turned out as worthy winners," he said.
"I just wanted the lads to give a good account of themselves and get them ready to play.
"Winning is fantastic but on Monday morning I will be back to my normal job, getting the reserve team ready for a game against Lincoln City away on Wednesday."
Story from BBC SPORT:
http://news.bbc.co.uk/go/pr/fr/-/sport2/hi/football/fa_cup/7809986.stm