The 20-year-old Belgian had little to do in the Atletico goal against his employers as he continues to impress on his loan stint in Spain.
Meanwhile, Chelsea’s current number one Petr Cech suffered an horrendous night, if not one of his worst since joining the club.
Courtois told Canal Plus: “Four-one against the Champions League winners is great and we could have won 6-1 or 7-1. I had a little work to do. [Diego]Simeone’s tactics were perfect. We played very well. We knew how to play and everything went very smoothly.”