According to Newcastle United legend Alan Shearer, Southampton pressing more in the second half and individual errors from Chelsea cost the Blues all three points against Southampton.
“Too many individual errors, once Southampton got the belief and started to press them a little bit higher,” Shearer said on BBC’s Match of the Day.
“In the second half they (Southampton) get 10 yards further up the pitch, there’s another error from Zouma, another one from the goalkeeper.
“Frank must have been a nervous wreck anytime the ball went anywhere near their defence because Southampton caused them all sorts of problems.
“They bring [Hakim] Ziyech on, another error with 15-20 minutes to go. Keep hold of the ball, can’t give it away that easy.
“But to be fair to Southampton they still go, still, try to press, they get a free-kick and no surprise another set-piece, ball in, they don’t clear it well enough, it falls to [Theo] Walcott and he gets it to [Jannik] Vestergaard.
“Southampton deserved their point because they had a lot more belief, especially in that second half.”