Chesterfield 3-3 Charlton aet (Charlton win 4-3 on pens): An upset looks possible when Colin Larkin puts the hosts ahead

Jimmy Floyd Hasselbaink equalises only to see Caleb Folan (centre) put Chesterfield back in front shortly after the break

The game turns on its head when Darren Bent forces extra-time and Hasselbaink nets his second to put Charlton ahead

Veteran striker Wayne Allison forces a shoot-out but the Premiership side prevail thanks to two saves by Scott Carson

Notts County 0-1 Wycombe: The Chairboys celebrate a quarter-final place thanks to Jermaine Easter's solitary strike

Southend 1-0 Man Utd: The holders fall behind during the first half when Freddy Eastwood curls home a fantastic free-kick

Cristiano Ronaldo looks as dangerous as ever but finds the Shrimpers' defence and goalkeeper up to the task

Darryl Flahavan has a night to remember as he thwarts several of Man Utd's stars in his efforts to keep a clean sheet

Despite mounting pressure, Southend hold on and complete one of the greatest wins in their history

Watford 2-2 Newcastle aet (Newcastle win 5-4 on pens): Antoine Sibierski heads home an early goal for the Magpies

It is a lead they hold until the 69th minute when Damien Francis (centre) taps in Ashley Young's free-kick

With the game going to extra-time, Danny Shittu (right) puts Watford ahead when he scores his first goal for the club

Scott Parker's goal takes the tie to penalties where Steve Harper saves Hameur Bouazza's spot-kick to clinch victory