Kylian Mbappe's penalty miss in France's win against Morocco is the latest example of a player missing a penalty after stuttering in the run-up.

It has become a theme of this year's World Cup that a stop-start run-up technique for a penalty is not always leading to a goal. France's Kylian Mbappe became the latest player to fail from the spot with this method as he had a tame first-half penalty saved by goalkeeper Yassine Bounou during their quarter-final victory over Morocco. The Real Madrid striker, 27, made amends on the hour mark when his sensational curling effort broke a stubborn Morocco defence, before Ousmane Dembele doubled France's lead six minutes later to secure a 2-0 win. But his earlier blunder, uncharacteristic for the joint-top scorer in this tournament, begs the question: is it time players stopped with the stuttering penalty kicks? In the list of things football traditionalists hate about the modern game, stuttering run-ups are high up alongside players wearing gloves with short sleeve shirts, diving, and of course the video assistant referee (VAR). There is no strict definition of a stutter, but under Fifa rules, a player is allowed to stop or feint during the run-up as long as they don't do it directly before kicking the ball. It's nothing new - John Aldridge, Mexico legend Hugo Sanchez and Pele all used the stutter to gain an advantage - but it can backfire spectacularly if the goalkeeper doesn't commit to diving early. Mbappe joins Bruno Guimaraes, Jorgen Strand Larsen, Messi and Harry Kane (though he was able to retake his penalty against Croatia, which he scored without having a stutter in his approach) in missing penalties after stuttering in the run-up.