The Chilean took advantage of a 97th minute spot-kick to deliver three points for Arsenal against Burnley on Sunday.
Andre Gray thought he had sealed a 1-1 draw for the visitors with his own late penalty, but there was one further twist in the tail.
And while most eyes were on Alexis after the final whistle, Laurent Koscielny’s questionable positioning during that decisive final passage and Arsene Wenger’s early exit also drew the attentive gaze of the Twitter universe.
