Answer
Jan Vertonghen won two KNVB Cup titles with Ajax in the 2012–13 and 2018–19 seasons. In the 2012–13 season, Ajax defeated Vitesse 1–0 in the final, with Vertonghen playing the entire match. In the 2018–19 season, Ajax defeated Willem II 4–0 in the final, with Vertonghen playing 66 minutes before being substituted for Noussair Mazraoui.