Career
Sergeant appeared for Sevilla Football Club"s youth setup, and had a stint with Atlético Zabal before graduating from AD Taraguilla. In the 2013 summer, he moved to Manchester 62. After appearing and captaining the Gibraltar U19"s, Sergeant made his debut with the full squad on 19 November 2013, in a 0–0 draw against Slovakia.
He is the youngest player to have been capped by Gibraltar.