Kamilo Keretić je rođen 19. 04. 1933. u Čakovcu u Hrvatskoj, a tenis je počeo igrati 1946. godine u Varaždinu. Diplomirao je pravo na pravnom fakultetu i apsolvirao  na ekonom-skom fakultetu sveučilišta u Zagrebu. Kao mladić je osim tenisa igrao i nogomet na poziciji vratara u nogometnom klubu Varteks. 1951. godine bio je juniorski prvak Hrvatske u tenisu, a seniorski prvak Jugoslavije u dvoranskom prvenstvu postao je 1956. godine. Od 1957. do 1958. bio je seniorski prvak i na vanjskim terenima. Za reprezentaciju Jugoslavije igrao je u Davis cupu od 1956. do 1959. godine. U istom periodu igrao je i na poznatim  međunarodnim turnirima u Parizu (ROLAND GARROS)  i u Londonu (WIMBLEDON).

Od najvećih rezultatskih uspjeha osim osvojenih prvenstava Jugoslavije, najznačajniji su svakako internacionalni igrački uspjesi: četvrtfinale Monte Carla, polufinale New Delhija, Bombay, München, Stuttgart, Kitzbuhel, i finale internacionalnog prvenstva Jugoslavije u Dubrovniku 1957. godine. Nakon odlaska u Njemačku natjecao se godinama u njemačkoj državnoj ligi, a zanimljivo je istaknuti kako je u 45.  godini igrao kao najstariji igrač u najkvalitetnijem nacionalnom teniskom natjecanju. Najbolje rezultate, zbog kojih ga i danas spominju,  postigao je kao trener u Njemačkoj. Tijekom duge trenerske karijere bio je trener, kapetan i izbornik svih  njemačkih reprezentacija, juniorskih i mlađih tenisača. Posjeduje dvije teniske licence, jednu od teniskog saveza Njemačke, drugu od saveza trenera Njemačke.

Kao trener je trenirao 8 značajnih igrača, od njihovih samih početaka do Davis Cupa. Najveći uspjeh postigao je  kao trener Australske Davis Cup reprezentacije, koja je igrala protiv Jugoslavije u Splitu 1969. i 1971. godine. U svojoj sportskoj karijeri bilo mu je ponuđeno da bude trener i kapetan Njemačkog teniskog saveza, ali tu ponudu radi obaveza nije mogao prihvatiti. Ima sina Damira koji je  4 godine igrao za Davis cup reprezentaciju Njemačke i 7 godina bio među prvih 100 igrača na svjetskoj rang listi. Kako Keretići vole uvijek naglasiti, sve svoje uspjehe duguju nažalost pokojnoj supruzi i majci koja se uvijek brinula za njih. Kamilo kaže: “Kada bih ponovo živio, živio bih isti život, jer mi  je sport puno dao, a ja sam mu pokušao uzvratiti.” Kamilo Keretić je živa legenda hrvatskog i svjetskog tenisa, a svojim velikim znanjem kao igrač, a pogotovo kao trener, uvelike je  doprinio razvoju njemačkog tenisa, tenisa koji je svijetu poslije dao jednog Borisa Beckera i Michaela Sticha, kao i ostale igrače koji su ostavili traga u povijesti svjetskoga tenisa.

Kamilo Keretić was born on 19 April 1933 in Čakovec, Croatia, and started playing tennis in 1946. As a young man, he played football and was the goalkeeper at Varteks football club. In 1951 he became Croatian Junior Tennis Champion, and Yugoslavian Senior Indoor Cham-pion in 1956. Between 1957 and 1958 he held the title of the Senior Outdoor Champion. He was a member of the Yugoslavian Davis Cup team between 1956 and 1959. In the same period he played at major international tournaments like Roland Garros and Wimbledon.

His other major achievements include: quarter-finals in Monte Carlo, semi-finals in New Delhi, Bombay, Munich, Stuttgart, Kitzbuhel and the finals of Jugoslav championship in Dubrovnik in 1957.After moving to Germany, he competed in German national league for a number of years. At the age of 45 he was the oldest player to compete in the top national tennis tournaments. Major achievements, however, for which he is still revered, came during his coaching career in Germany. In the long course of his career as a coach, he was the coach, captain and manager of all German national teams, junior and young tennis players. He has professional licenses from the German Tennis Federation, and German Coaching Federation. As a coach, he trained 8 prominent players, guiding them from their very beginnings to their careers as Davis Cup players. His career highlight was coaching the Australian Davis Cup team playing against Yugoslavia in Split in 1969 and 1971 respectively. In the course of his career he was presented with the opportunity to become the coach and captain of the German Tennis Federation, however Keretić chose to decline the proposal.

He is delighted that his son, who plays tennis and ice hockey, has fol-lowed in his footsteps as an athlete. He played on the German Davis Cup team for 7 years and was ranked among top 100 players in the world rankings. Today his son Damir is a co-owner of a large market-ing agency DREWES-KERETIĆ. Father and son Keretić always point out that they owe all their accomplishments to their beloved late wife and mother, who used to be a great source of support. Kamilo adds: „If I lived once more, I would live the same life all over again, because sport has given me a lot, and I have tried to give back to sport.“Kamilo Keretić is a living legend of Croatian and world tennis, and with his great skills as a player, and particularly as a coach, he has made a significant contribution to German tennis, the tennis that would later give Boris Becker and Michael Stich to the world, as well as other players who have made their mark in the history of world tennis.