Punčec started to play tennis at the Čakovecsports club and was coached by Géza Legenstein. He was crowned junior champion of Yugoslavia in 1931. He celebrated his first international match win at the 1931 Hungarian International Championships, over Wilhelm Brosch of Austria, at the age of 17. Though he lost in the second round in singles and first round of mixed doubles, he reached the quarterfinals of the doubles. He was asked to be a line judge at the 1931 Davis Cup tie against Japan Davis Cup team in Zagreb. He then joined the CWC Concordia Zagreb tennis club.
Tennis career
Punčec played for the Kingdom of Yugoslavia Davis Cup team at the International Lawn Tennis Challenge, and later the Davis Cup, from 1933 to 1946. His greatest successes were reaching the semifinals of the French Open in 1938, where he lost against Czechoslovakian Roderich Menzel, and reaching the semifinals at Wimbledon, where he lost to American Don Budge that same year. In 1939 he again reached the semifinals at Wimbledon, but lost to American Bobby Riggs. He was the first Croatian ever to be placed in the rankings list, reaching as high as World No. 4 in Gordon Lowe's 1939 amateur rankings. Punčec was also ranked World No. 10 by A. Wallis Myers of The Daily Telegraph in 1938. Sport Magazine of Zurich ranked him first in the European rankings and third in the World's top ten. In 1933 Punčec fell in the semifinal of the Italian International Championships to eventual winner Emanuele Sartorio in three straight sets. The next year, he returned to the tournament and was more successful in the mixed doubles, partnering Madzy Rollin Couquerque; they ceded the title match victory to Dorothy Andrus and André Martin-Legeay. In 1935 he traveled to India, where he clinched the Madras and Punjab city titles. The following year, he became the champion of Cape Town. In 1937 Punčec won the Paris International tournament and bested Kho Sin-Kie in four sets. The same year, he reached the semifinal of the singles of the Tennis Napoli Cup and the quarterfinals in the doubles. He also won tournaments in Venice and in Bastad. In 1938 Punčec won the Monte Carlo international tournament and the International Championship of Scandinavia. On the French Riviera, he won the Beaulieu tournament after back-to-back victories over Bunny Austin and František Cejnar. According to John Bromwich, he was ranked 8th in the world that year. In 1939 he was a runner-up for the Pacific Southwest Championship, losing to John Bromwich in what was described as the best match of the tournament. According to Bromwich, he was ranked 5th in the world that year. During World War II the Davis Cup was suspended and Yugoslavia was dissolved. Punčec joined the newly formed Croatian Tennis Association. Apart from the Davis Cup, he played for the Rome Cup and Danube Cup. He last represented the Kingdom of Yugoslavia in a friendly match against Hungary, which ended in a tie. In 1941 he was ranked sixth on the list of European rankings. He represented Croatia in 1942 against Hungary in Budapest, which also ended in a tie. He played only an exhibition match at the meeting. In 1943 it was reported that Punčec was planning to change nationality and join the Hungarian tennis ranks, although the rumor was unconfirmed. Punčec returned to tennis in 1946 to represent Yugoslavia in the Davis Cup. The match inaugurated the upgraded Stade Roland Garros, which had a sold-out crowd of 12,000. The French team kicked off with a 2–0 lead after the first two singles. Both players were so unfocused that Dragutin Mitić made six foot faults on serve, while Punčec botched four. In the doubles, Bernard Destremau and Pierre Pellizza were leading 7–6 in the fifth deciding set when the Yugoslavian pair turned the tide and delivered a 10–8 victory. Mitić equaled the tally with his singles win the next day. The decider was fought between Yvon Petra and Punčec. It was a "collision of playing styles" as Petra approached the net frequently while Punčec operated with passing shots. Punčec led through five sets, not allowing his opponent to even hold his serve. During the final game, the Yugoslavs missed four match points but converted the fifth, winning the match and Punčec's last team victory.
Personal
In Yugoslavia Punčec worked as a state official. In 1943 he married Zora Punčec and moved to South Africa with her in 1948. They had three children, Frank, Victor, and Sylvia. The sons were also involved in tennis and Frank was featured in the singles main draw of the 1983 French Open; he was ranked 179th in the world.
