Liverpool's Harry Wilson was 16 years and 207 days old when sent on for the final three minutes of Wales's dead rubber World Cup qualifier against Belgium in October 2013.
Gareth Bale lost his record as the youngest Welsh international in that moment but Craig Bellamy questioned Chris Coleman's decision to blood Wilson at such an age.
England were showing an interest and capping Wilson in a competitive fixture cemented his Welsh allegiance forever. Bellamy wondered about the morality of it.
Though consistently trusting in youth, notably with Ben Woodburn, Coleman would not send Wilson into action again.