The Brazilian had previously played in friendly games for the Real Madrid first team and despite many appearances for RM Castilla, tonight made his first official appearance.
Vinicius Jr. finally made his first official appearance in a Real Madrid with coach Julen Lopetegui deciding to introduce the Brazilian into the fray in the 88th minute replacing French striker Karim Benzema.
The Brazilian featured in a number of the clubs pre-season games during the US tour and was one of the major attractions in this season's Trofeo Bernabeu where Madrid saw off AC Milan 3-1.
The Basque coach felt playing time with Real Madrid Castilla in Segunda B would be good grounding for the teenager and the former Flamengo player has now been called up for two squads (the midweek trip to Seville and tonight's derby).
The Brazilian had little time to impose himself on the action as Real Madrid and Atleti played out a 0-0 draw at the Bernabeu.