- 3.2.1 Siege
- 3.2.2 finals
Vacek began at the age of eleven, encouraged by his father to play tennis and attended the Nick Bollettieri Tennis Academy in Florida. His professional career began in 1990 and was able to win three titles in the first year with his doubles partner Vojtěch Flegl. After several changes in doubles partner in the coming years and could deny some Finals, he played from 1993 to 1995 with Cyril Suk, with whom he won five doubles titles. In 1994, he reached his first final as a single player at the ATP tournament in Copenhagen, but had to Yevgeny Kafelnikov 6-3, defeated 7-5. On his second singles final in 1995 in Marseilles, he was again defeated, this time with Boris Becker 6-7, 6-4, 7-5.
In 1996, he competed in Atlanta in the Summer Olympics. In some he left in the second round and reached the doubles together with Jiří Novák the quarterfinals. Although he could not win a title in 1996 was the most successful year of his solo career when he reached number 26 of the world tennis rankings. In the same year Yevgeny Kafelnikov his doubles partner was. With him Vacek had its most successful period in tennis. Together they won eight tournaments, including two wins at the French Open in 1996 and 1997, as well as a victory at the U.S. Open in 1997.
As a single player Vacek reached five finals, of which he won none. As a doubles player, he won a total of 25 titles in 40 finals.
After his tennis career he took over in January 2003, 75 % of the shares of the Czech first division club Banik Ostrava, which he held until 2009, and then resold to the businessman Tomas Petera.
Vacek married on 3 December 1998 his wife Renee. The couple has one child.