A game containing nine bookings and three penalties was never as fractious as might appear and certainly there was relief all round that the game was not as controversial as the meeting in the League on Sunday.
Manchester United made ten changes to the team which visited Stamford Bridge at the weekend, and it was this youthful line-up which eventually struggled to cope with Chelsea's more experienced strikers.
In extra time the hosts took control with Daniel Sturridge and Ramires getting on the scoresheet only for Giggs to set up a nervy last couple of minutes with another penalty.
Referee: Lee Mason
Venue: Stamford Bridge
Chelsea scorers: Luiz pen 31, Cahill 52, Hazard pen 94, Sturridge 97, Ramires 116
Man Utd scorers: Giggs 22, pen 120, Hernandez 43, Nani 59
Yellow cards: Ramires (CHE), Oscar (CHE), Luiz (CHE), Romeu (CHE), Mikel (CHE), Wooton (MANU), Nani (MANU), Keane (MANU), Giggs (MANU)