Real Madrid edged past Leganes in the Copa del Rey quarter-final thanks to a late winner from debutant Gonzalo Garcia.
Ancelotti’s team dominated early, scoring two goals in the first 25 minutes.
At age 39, Luka Modric added to his Real Madrid record as their oldest goalscorer, neatly finishing a pass by Rodrygo.
Endrick, a Brazilian teenager, scored another goal.
With a penalty and a deflected shot, Juan Cruz scored two goals, evening the score for Leganes.
However, Garcia, 20, made his season debut with eight minutes remaining, scoring with a header from Brahim Diaz’s cross.
Garcia’s impressive 19 goals in 21 matches this season highlight his success with Real Madrid’s B team in the third tier.