Tabak competed for Israel at the 1952 Summer Olympics when he was 24 years old, in Helsinki. He ran in the Men's 100 metres, and after winning his first heat came in 6th in the quarterfinals with an Israeli record time of 10.6, which stood for over 14 years. He also ran in the Men's 200 metres, and after winning his first heat came in 5th in the quarterfinals with a time of 21.8, which stood as an Israeli record for 26 years.