The teenager had won a penalty after a scintillating run before waling off the field after 65 minutes of his Spanish debut
Joao Felix has limped of the field in his Atletico Madrid La Liga debut, after suffering an apparent ankle injury.
The Portugal international joined Atleti in a €120m (£113m/$142m) deal over the summer but was unable to finish his debut, being replaced by another new boy in Marcos Llorente after 65 minutes.
Felix had won a penalty earlier in the game after a mazy dribble, but Alvaro Morata missed the spot-kick.