Chelsea’s Under-18 side are into the semi-finals of this season’s Under-18 Premier League Cup after beating Sunderland 2-1 after extra time on Wearside.

Conor Gallagher scored for The Blues in normal time but Sunderland levelled to take the match into extra time. Juan Castillo nudged Jody Morris’ men ahead in the additional 30 minutes before Karlo Ziger saved a penalty kick at the death to save Chelsea’s blushes.

Chelsea dominated the first half at The Academy of Light and home keeper Anthony Patterson had to be on form to keep out efforts from Tariq Uwakwe and Martell Taylor-Crossdale as the first 45 minutes ended goalless.

Morris’ men took the lead just after the hour mark when substitute Black Cats keeper Michael Woud brought down Taylor-Crossdale in the box. Gallagher stepped up to take the spot kick and made no mistake from 12 yards.

Chelsea looked to be on course for the victory until Sunderland won a penalty kick of their own which was successfully converted by Sam Greenwood.

Tariq Lamptey then saw an effort strike the post before Charlie Brown missed a big chance deep in injury time as the two sides ended level after 90 minutes.

The first half of extra time saw Lamptey again fire a shot onto the woodwork before Chelsea regained the lead courtesy of a composed finish from Castillo.

The second period of extra time saw Chelsea comfortably hold onto their lead until keeper Ziger conceded a late penalty. Manager Morris will have expected the worst but The Blues keeper made up for his error with a stunning save from Greenwood’s spot kick.

Chelsea are back in action next Saturday when they travel to Arsenal in the Under-18 Premier League.