You have to have some nerve to step up and deliver a panenka penalty with the last kick of the game - but then Alexis Sanchez is no ordinary player.
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.
Alexis Sanchez scoring the winning penalty won by Koscielny from an offside position makes it even better.— Danny Welbeck (@WelBeast) 22 de enero de 2017
Only Alexis Sanchez would panenka a 97th minute penalty. Such supreme confidence and arrogance. Closest we'll ever get to Thierry Henry.— ARSENAL (@Artekkers) 22 de enero de 2017
Alexis Sánchez, along with Sergio Ramos, has the best mentality in football. Stone cold killers. No nerves. Clutch players.— Liam Canning (@LiamPaulCanning) 22 de enero de 2017
Dhdhdh I swear I'm still high on that Alexis goal pic.twitter.com/GQOSvQvZjC— Sindre (@Sindre_lk) 22 de enero de 2017
Klopp shouts expletives at officials and Wenger shoves a fourth official, but it's Mourinho who gets banned for kicking a water bottle.— Liam Canning (@LiamPaulCanning) 22 de enero de 2017
Mourhino watching Wenger push the official pic.twitter.com/5O6sqkXsxU—A-A-RON(@FlavaInYourEar) 22 de enero de 2017
Wenger's transformation from football professor to football hooligan on the sidelines is the greatest character arc since Walter White.— Jonny (@JonnyOneill) 22 de enero de 2017