Harry Kane marked his 100th appearance for us with a fantastic strike to put us in front on 40 minutes, the striker bulldozing his way through the Saints' defence before smashing past Paulo Gazzaniga.
Within three minutes we were 2-0 up as Dele Alli turned home Kyle Walker's low ball in from the right at the back post.
After a solid second half showing from the team, Hugo Lloris made an incredible low save in stoppage time to keep out James Ward-Prowse's effort - keeping his clean sheet intact.
Southampton (4-2-3-1): Gazzaniga, Cedric, Van Dijk, Fonte (c), Bertrand; Clasie (Ward-Prowse 78), Wanyama; Mane, Davis (Long 64), Tadic (Juanmi 64); Pelle. Substitutes (not used): K Davis, Yoshida, Romeu, Targett.
Spurs (4-2-3-1): Lloris (c), Walker, Alderweireld, Vertonghen, Davies; Dembele, Dier; Lamela, Alli (Carroll 78), Eriksen (Chadli 86); Kane (Son 90). Substitutes (not used): Vorm, Wimmer, Bentaleb, Winks.
Goals: Spurs - Kane 40, Alli 43.
Yellow cards: Southampton - Fonte 40; Spurs – Alli 72.
Referee: Kevin Friend.