A fine game at White Hart Lane.
Two mistakes from Tottenham defender Kyle Naughton allowed Southampton to take a 2-0 lead through Jay Rodriguez and Adam Lallana.
Shortly afterwards, Christian Eriksen pulled one back after an error from Nathanial Clyne.
Early in the second half it was 2-2, as Roberto Soldado bullied Dejan Lovren off the ball to cross for Eriksen.
With the match seemingly destined for a draw, Gylfi Sigurdsson seized on the ball on the edge of the box and arrowed this shot past Artur Boruc.