Thibaut Courtois (currently on loan from Chelsea at Atletico Madrid) is seen as the likely long tern successor to Peter Cech at Chelsea and generally he has been a pretty solid, mistake-free keeper during his time in Spain.
That wasn't so tonight against Zenit St. Petersburg when he allowed a cross deflected off Toby Alderweireld's head to fly in over his head for an own goal.
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He appeared to think it was either going wide or over the bar and chose the leave the ball go rather than catch it.
GIF via reddit
