Arsenal's young Gunners booked a place in round four of the Carling Cup following their 2-0 victory over 10-man West Brom at the Emirates Stadium.
Sanchez Watt opened the scoring just after the hour as the Baggies were eventually undone following the first-half sending off of midfielder Jerome Thomas, who once played for Arsenal.
Mexican striker Carlos Vela added a second from close range.
Jordan Henderson and Fraizer Campbell dumped Birmingham out as Sunderland coasted into the fourth round following their 2-0 victory.
Teenager Henderson scored his first senior goal for the club with just four minutes gone, and when Campbell matched his feat 19 minutes later, the game was effectively over.
John Mensah had a second-half strike chalked off for a foul, but the Black Cats never looked back on a night when they were simply too strong for the visitors.
Portsmouth recovered from a disastrous start to overcome Carlisle 3-1 and relieve some of the pressure on manager Paul Hart.
Around 600 Portsmouth fans were rewarded for their 750-mile round trip to Brunton Park with a win, but nobody was more relieved at the final whistle than Hart, whose job looked to be on the line when Ian Harte put the League One side a goal up from the penalty spot after only two minutes.
Aaron Mokoena was the guilty party after needlessly hauling down Richard Offiong, but Pompey regained their composure quickly and strikes from Aruna Dindane, Danny Webber and Anthony Vanden Borre - all their first for the club - sealed a morale-boosting 3-1 victory.
Copyright (c) PA Sport 2009, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms