Sébastien Haller was the real star of the night, becoming the first player from a Dutch side to score four goals in his Champions League debut.
Sporting CP - Ajax 1-5 (1-3)
2. Haller 0-1
9. Haller 0-2
33. Paulinho 1-2
39. Berghuis 1-3
51. Haller 1-4
63. Haller 1-5
Ajax: Pasveer, Mazraoui (71. Rensch), Timber, Martínez, Blind (81. Schuurs), Álvarez, Berghuis (53. Taylor), Gravenberch, Antony (Neres), Haller, Tadic.