SELECT date FROM table_name_45 WHERE venue = "estadio alejandro villanueva" AND season > 2003 AND competition_round = "torneo apertura" AND winner = "universitario"
Pada tanggal berapa di Universsitario memenangkan putaran turnamen 2003 dan Estadio Alejandro Villanueva?
CREATE TABLE table_name_45 (date VARCHAR, winner VARCHAR, competition_round VARCHAR, venue VARCHAR, season VARCHAR)