Victor Wanyama's third minute goal was enough to give Southampton all three points from their trip to Hull City.
The Kenyan perfectly executed a lob after Hull goalkeeper Eldin Jakupovic fired his clearance straight to the Southampton midfielder who capitalised on the mistake to launch into the unguarded net.
The goal so early on was all that Ronald Koeman's side needed for three points, and another clean sheet was just as much reward as they cemented second place in the Premier League table.
With the match barely minutes old, Jakupovic, making his home debut, fired his clearance straight the foot of Wanyama and without even taking a touch the midfielder fired a 40-yard effort over the despairing goalkeeper into the empty goal he left behind.
Hull came into the game with Robbie Brady and Hatem Ben Arfa close to beating Fraser Forster in the Southampton goal, but the half-chances were all that the home side could create in a tight first-half.
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Jakupovic was almost punished for another mistake as he dithered over a long ball, but the former-Hull striker Shane Long looped his header wide of the post after beating the Swiss international to reach the ball first.
Strong rearguard action
The second half was always going to be a long one for Ronald Koeman's men, but the Saints defence are made of stern stuff these days. With Jose Fonte and Toby Alderweireld a solid partnership this season, they stood firm to everything thrown at them during the afternoon.
The visitors could have wrapped up the victory with the best chances of the half, after substitute Sadio Mane somehow deflected Dusan Tadic's cross into the ground and over the bar from less than six yards.
Graziano Pelle also missed a late chance but with the early goal already on the scoreboard, the Southampton rearguard performance was most important for Koeman whose side kept their seventh clean sheet of the season.
The win keeps the Saints in second place behind Chelsea in the Premier League, and with Leicester City to visit St. Mary's next week, the Southampton faithful will be hoping that their superb run of seven wins from eight league matches can continue for a while longer.
Southampton player ratings
Forster - 6
Clyne - 7
Fonte - 7
Alderweireld - 7
Bertrand - 6
Wanyama - 8
Schneiderlin - 7
Davis - 7
Long - 6
Tadic - 7
Pelle - 6
Cork - 6
Mane - 6
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