Every Southampton fan will be able to tell you. Football supporters only look at the game through the lens of their own team and what their team could/should/did do. By assigning agency only to your players, you get to continue the illusion that only your club is in complete control of the outcome (which is why refs are so harshly treated, as a kind of external encroachment on this perspective -- they shatter the illusion).Bollocks.
Go tell me who's at fault for the Spurs goal then? Which Southampton player lost the ball before Son ended up scoring?