A brace from Shaq Coulthirst just after the half-hour mark put us in control, while further goals from Anton Walkes and substitute Emmanuel Sonupe in the final 13 minutes completed a resounding victory to see us qualify for the quarter-finals - where we'll face Chelsea in the New Year - as winners of our group.
Spurs U21s: Glover, Walker-Peters, Amos, Lesniak, Carter-Vickers, Veljkovic (c), Townsend, Winks, Coulthirst (Harrison 71), Walkes (Sonupe 77), Onomah (Miller 46). Substitutes (not used): Georgiou, McDermott (GK).
Porto U21s: Caio (c), Mauricio, Trabulo, Soares, G Moreira (Pedro 75), Ruiz, R Moreira, C Ribeiro, Varela (Santos 58), S Ribeiro (Cassama 58), Verdasca. Substitutes (not used): Fernandes, Fonseca, Mata, Costa (GK).
Above: Josh Onomah in action against Porto.