Sam Vokes headed a late winner against his hometown club as Burnley added to their impressive points haul on the road by grinding out a 1-0 win at St Mary's.
The Wales international striker, a boyhood Saints fan, climbed off the bench to meet Johann Berg Gudmundsson's inviting cross with nine minutes remaining.
Iceland international Gudmundsson picked up the ball on the right wing and his inswinging cross was guided into the bottom right corner by Vokes.
Sean Dyche's men have now taken 11 points from their opening six away league games having already won at Chelsea and Everton and drawn against Tottenham and Liverpool.
It was a smash-and-grab job on the south coast after Southampton dominated the match, albeit creating little as their struggle for goals continued.
Hit the video above to watch highlights of Burnley's 1-0 win over Southampton.