Southampton 1-2 Liverpool: Darwin Nunez and Harvey Elliott score the goals as the holders progress to the final four despite a second-half onslaught from the Saints
Alessia Russo is being rewarded for hard work under interim boss Renee Slegers and her fine form continued in Arsenal's final game before the winter break.
Manager Mikel Arteta eases fears that Kieran Tierney has suffered another injury blow after the Scotland defender ended six months on the sidelines but was forced off before the end of Arsenal's win over Crystal Palace.
Arsenal and Chelsea win their Women's Champions League groups and Manchester City finish as runner-up as three English sides reach the last eight.