Southampton lead Chelsea 2-1 at St.Mary’s despite going behind in the match.
Sterling put the Blues ahead after 23 minutes but the Saints have responded fantastically ever since.
A Romeo Lavia beauty brought the home side level but they have now taken the lead just before halftime through Adam Armstrong.
The goal was a lovely team goal that was worked all the way up the pitch. The ball then found itself at the feet of Romain Perraud before the left-back picked out a free Armstrong in the box, whose shot went in off the back of Kalidou Koulibaly.