Coventry stunned an inexperienced Manchester United side to send the Premier League champions crashing out of the Carling Cup at Old Trafford on Wednesday night.
Roared on by more than 11,000 travelling fans, Iain Dowie's side were impressive throughout against hosts including Anderson, Nani, John O'Shea and Tomasz Kuszczak.
When Jonny Evans failed to clear the danger, Michael Doyle sent the ball into the area for Michael Mifsud to give Coventry a first-half lead in the 27th minute.
The Sky Blues deserved their advantage - and while United sought a leveller in the second half, Mifsud doubled the lead with 20 minutes left to play.
Avram Grant fielded a strong Chelsea side for their 4-0 win at Hull.
A very cool finish by Scott Sinclair gave the Blues an early lead. Salomon Kalou claimed a second for Chelsea as he and defender Damien Delaney jointly headed the ball past Bo Myhill.
Steve Sidwell made it three on 52 minutes to put the game firmly beyond the Tigers - and Kalou wrapped it up with an easy fourth, after substitute Joe Cole worked his way in from the left.
Everton recovered from a stuttering start to beat Sheffield Wednesday 3-0 at Hillsborough.
David Moyes' side hit Wednesday on the break to take a 58th-minute lead.
Steven Pienaar threaded a fine pass into Ayegbeni Yakubu's path down the right - and his curling low cross to the far post was met by James McFadden, who comfortably side-footed home his second goal of the season for Everton.
McFadden made it 2-0 with six minutes left, and strike partner Yakubu rounded the night off with a third a minute later.
Birmingham were knocked out by Blackburn at Ewood Park, but manager Steve Bruce will have been more concerned by a worrying injury to goalkeeper Richard Kingson.
City lost 3-0 to goals by David Bentley, a Matt Derbyshire penalty and Roque Santa Cruz - but the game was marred by Kingson's injury.
Late in the first half, he hit his head against a post after an aerial challenge with Chris Samba and - after receiving treatment - collapsed and had to be taken off.
Jermain Defoe made a rare start for Tottenham but was withdrawn before his side went on to beat Middlesbrough 2-0.
Defoe's lively performance was not enough to earn him a goal. Substitute Robbie Keane was introduced in his place and he helped set up youngster Gareth Bale, who put the ball beyond Brad Jones before Tom Huddlestone made sure of the win moments later.
Local lad Matt Fryatt enjoyed a winning return to the west midlands as he scored to give Leicester a 1-0 win at Premier League Aston Villa.
Iain Hume had wasted Leicester's best chance when he headed wide from close range when well placed in a half of few clear-cut chances.
But Fryatt livened up proceedings by putting the east midlanders ahead after 76 minutes.
An injury-time winner from Dean Ashton sent West Ham through against Coca-Cola Championship Plymouth.
The game was heading for extra-time until Ashton popped up at the death to fire West Ham in front and secure a fourth-round spot.
Fulham and Bolton headed for extra-time when David Healy cancelled out Danny Guthrie's debut goal for the Trotters.
Sammy Lee sent veteran Stelios Giannakopoulos on as an extra-time substitute and the Greek fired home a well-earned winner to book Bolton their place in the fourth round.