Cucelli played Davis Cup for Italy and formed a great doubles partnership with Marcello Del Bello.

Because of World War 2, Cucelli was 30 by the time he made his Grand Slam debut at Wimbledon in 1947, where he lost in the third round to Jack Kramer.

At Roland Garros (held just after Wimbledon) Cucelli beat veteran Jack Crawford and Robert Abdesselam before losing to defending champion Marcel Bernard in five sets in the quarter-finals.

[3] At Wimbledon Cucelli beat Jaroslav Drobny before losing to Tony Mottram in round three.

[7] After early exits at the French and Wimbledon in 1951, Cucelli reached the last 16 at Roland Garros in 1952, where he lost to Ken McGregor.