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Diego Costa is portion of a agelong database of players who person had to deterioration protective look masks while featuring for Chelsea - see Pedro, Pierre-Emerick Aubameyang, Petr Cech, Cesar Azpilicueta, Gary Cahill and Nemanja Matic.
Costa wore his protective look disguise against Southampton successful nan Premier League successful 2016.
He collapsed his chemoreceptor successful a collision pinch team-mate Fikayo Tomori, now astatine AC Milan, successful a training session.