The defender got on the end of Jesus Navas’ cross right on the stroke of half time, attempting to clear it acrobatically.
However, he unwittingly guided the ball into his own net beyond a stunned Thibaut Courtois, with City players wheeling away emphatically not believing their luck.
And Twitter could likewise only celebrate what will be remembered as a special goal by Cahill, though not quite the way he intended.
Top class defensive entertainment from the Englishman, who capably usurped team-mate David Luiz in the role of providing comedic relief on Saturday…
