There were a few upsets in this round of the cup, although 11 of the 20 Premiership sides had already been eliminated in the previous round.

Two Premierleague sides went out this time, although only one of them was really an upset.

Derby lost 1-4 away to Preston, and it's been a tradition over the years for teams at the foot of the Premier league table to lose clubs that are doing well in the Championship. This was one such case, and I think Paul Jewell will already be looking at how best to mount a challenge in the Championship next season.

The other upset, which was significantly more shocking, not just for the result, but the events of the match as well, was Sheffield United beating Man City 2-1 at Bramall Lane. City have an awful record there, having not won in 6 games, but no one could have expected to see what happen.

The incident, in case you haven't seen/heard about it yet, was caused by several balloons thrown onto the pitch by the travelling Man City fans. Joe Hart dealt with whatever crosses and shots came his way, but unfortunately failed to deal with the balloons, and they just lay around in the home penalty area. The eventual irony was of course majestic - a cross coming in from the left hit two sets of balloons in the area, the path of the ball went wonky, and it ballooned (haha) away to evade the foot of Michael Ball(oon), sitting up nicely for Luton Shelton to pop home. Jonathan Stead scored a neat second, and City were in trouble. Elano came close, hitting the post with a free-kick, but it was his second-half replacement, youngster Daniel Sturridge, who scored City's consolation with an excellent strike.

The unfortunate Man City squad had more misery heaped on them after it was found that the dressing room had been robbed, with money being stolen from the players and staff. 

Arsenal and Emmanuel Adebayor recovered from the Spurs' debacle, beating Newcastle 3-0. Keegan's men started quite promisingly, but were outplayed by the end of the encounter with two top quality goals from Adebayor, and and own goal from Nicky Butt.

Cristiano Ronaldo meanwhile continued his amazing form, scoring a brace to give Man United a 3-1 win over Tottenham, and giving him 25 goals for the season. Robbie Keane had scored first for Spurs, but Carlos Tevez equalised, before Ronaldo scored a penalty and then the winner.

Chelsea had a few hiccups against a decent Wigan side, but easily prevailed as 2-1 winners, with Nicolas Anelka scoring his first for Chelsea. Shaun Wright-Phillips scored their second, and Atoine Sibierski scored a consolation. 

In other news (apologies for not going into detail, but I can't be bothered), Cardiff just edged out Hereford in a 2-1 win, Wolves absolutely hammered Championship title challengers Watford 4-1 away, and in Saturday's "fairytale" fixture of non-league Havant & Waterlooville vs Liverpool at Anfield, the Hawks actually took the lead twice before being put down 5-1.

The full list of Round 4 results is listed below. The amazing thing about this round is that all the matches were conclusive (wins), meaning no 4th round replays for the first time in 57 years.

Southend 0-1 Barnsley
Mansfield 0-2 Middlesborough
Arsenal 3-0 Newcastle
Barnet 0-1 Bristol Rovers
Coventry 2-1 Millwall
Derby 1-4 Preston
Liverpool 5-2 Havant & Waterlooville
Oldham 0-1 Huddersfield
Peterborough 0-3 West Brom
Portsmouth 2-1 Plymouth
Southampton 2-0 Bury
Watford 1-4 Wolves
Wigan 1-2 Chelsea
Hereford 1-2 Cardiff
Man Utd 3-1 Tottenham
Sheff Utd 2-1 Man City