Martin Odegaard was born on 17 December 1998 in Drammen, Norway. That made him 15 Years and 300 days old on 13 October 2014, when he became the youngest player ever to appear in a European Championship qualifier in his side's victory over Bulgaria in Oslo.
It was actually his 2nd cap. His first was in a friendly against United Arab Emirates last August.
--------- Alex Kemp