Ralph Hasenhuttl revealed Che Adam's 'unbelievable' 40-yard winner against Manchester City was a result of Southampton's pre-match plan to exploit Ederson's positioning.
Adams broke his Southampton duck in his 30th appearance with a goal of stunning awareness and execution to condemn Pep Guardiola to three successive away defeats for the first time in his career.
After Stuart Armstrong dispossessed Oleksandr Zinchenko, Adams instantly whipped a perfect, first-time effort over a City's stranded sweeper-keeper Ederson.
Hasenhuttl said: 'When you have a goalkeeper like him who is also playing like a libero to build up the game it is normal that he is not always in the perfect position when you win the ball very quickly.