Lionel Messi called for calm and said there is no need for Argentina to go "crazy", despite failing to beat Iceland at the World Cup, partly thanks to his "painful" penalty miss.
Argentina's opening match at Russia 2018 ended in a 1-1 draw in Moscow after Alfred Finnbogason's historic goal cancelled out Sergio Aguero's opener in Saturday's Group D meeting.
Messi was denied by Hannes Thor Halldorsson when he took a second-half spot-kick - and he recorded 11 shots in the game without beating Iceland's goalkeeper.
Argentina's captain, a three-time beaten finalist at major tournaments with his country since 2014, does not want to panic after Iceland claimed a major scalp on their World Cup bow.