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Jose Fonte and the Saints have scored six goals off of corner kicks this season.
If Spurs fail to keep their composure, they may very well be punished on set pieces.
The Saints are currently tied for fourth in the Premier League in set-piece goals with 14, according to Squawka. Nine of those 14 goals have come via corner kick or crossed free kicks, as Southampton has used its aerial prowess.
Tottenham isn't the strongest team in the air. Only three Spurs regulars, Dawson, Vertonghen and Emmanuel Adebayor, average more than 2.0 aerial duels won per match, according to WhoScored.
Spurs do have 12 set-piece goals this season, but that total is a bit misleading. Four of the goals came via penalty kicks and another two were direct free kicks, according to Squawka.
If Tottenham can stay level with Southampton in terms of set pieces, the home-field advantage may push Spurs toward all three points.