Former Arsenal academy star Yunus Musah became the first English player to represent the Spanish side when he started their opening 4-2 La Liga win over Levante on 13 September.
And at 17 years 289 days, it also made England youth international Musah the club's youngest foreign player, as well as putting him in the top 10 youngest overall.
Musah made his second successive start in a 2-1 defeat by Celta Vigo on Saturday, meaning he has played 171 of Valencia's 180 league minutes so far as he seeks to consolidate a place in the first team following the club's turbulent pre-season.
Valencia supporters protested against owner Peter Lim before the Levante game, after former Watford boss Javi Gracia became the club's eighth different manager since 2014 and key players Ferran Torres, Rodrigo, Dani Parejo and Francis Coquelin all departed.