Southampton head to Liverpool in the driving seat after Nathan Redmond's strike secured a narrow victory in the League Cup semi-final first leg.
Redmond's first-half strike was the difference at a packed-out St Mary's, bringing a timely end to Southampton's four-match winless run in all competitions on their first appearance in the last four of a major competition since 2003.
Nathan Redmond's cool finish from Jay Rodriguez's pass gave Saints a crucial lead to take to Anfield on 25 January - but Southampton can count themselves unlucky not to be in complete control of this battle for a place at Wembley.
Liverpool's much-criticised goalkeeper Loris Karius was one of very few in Jurgen Klopp's side to distinguish himself amid a shocking performance, making two fine first-half saves from goalscorer Redmond.
Karius's one-handed save from Redmond right on half-time was vital but he was helpless late on as the same player threatened once more, Liverpool enjoying more good fortune as his effort came back off the bar.