Swansea City U21 exacted revenge for a prior defeat by thrashing Millwall U21 5-1 in the English U21 League Cup on December 20th, 2025. In a remarkable turnaround from their 3-2 loss to Wolves, Swansea produced a devastating attacking display at Millwall's home ground. Swansea took an early lead and never looked back, adding two more before halftime to kill the tie. The second half saw Millwall grab a consolation goal, but Swansea responded immediately with two more of their own to complete the rout. The emphatic match result was a testament to Swansea's character and firepower, advancing in style and ending Millwall's cup campaign, which featured several heavy defeats.