Chelsea Career: 2003-2004, 12 appearances. Signed as understudy to Carlo Cudicini, a keeper to feature at the opposite end of the spectrum, Ambrosio gave a memorable first impression at Stamford Bridge. Sadly, his was memorable for all of the wrong reasons. The Italians debut came against Notts County in the League Cup, and saw him make several errors against the lower ranked opposition. Despite a Chelsea win, Ambrosio conceded twice. The keepers fortunes did improve when injury to Cudicini and Jurgen Macho forced him into the first-team slot, as he made a handful of appearances most notably in a Champions League quarter final victory over Arsenal. But the return of Cudicini and signing of Petr Cech marked the end of Ambrosios short time at Chelsea. After only a season with the club he left.