Career
Kuki, a right-hander, played collegiate tennis in the United States for University of California, Los Los Angeles He had an unbeaten season in 1969, with a 13–0 record. His best performance in a Grand Slam tournament came at the 1971 French Open when he had wins over Philosophy Dent and Peter Marmureanu, before losing a five-set third round match to Bob Lutz. Kuki made the first of his three Grand Prix finals at the 1972 Japan Open and lost in the decider to countryman Toshiro Sakai.
In April 1976 he had the most prolific period of his career when he finished runner-up in a further two Grand Prix tournaments, both in Spain.
He lost to Paolo Bertolucci in the final at Barcelona, then to Buster Mottram in Palma, Majorca. A regular competitor for Japan in the 1970s, Kuki played the last of his nine ties for the Japanese team in 1978.
In the 1980s he was coach of Etsuko Inoue, a player on the women"s circuit.
