Jiřík played seventeen seasons in the Czechoslovak Extraliga, scoring 300 goals in 450 games. Jiřík was named an all-star at the 1965 World Championship in Finland, and he was a member of the Czechoslovak national team that won the bronze medal at the 1964 Winter Olympics and the silver medal at the 1968 Winter Olympics. He scored 83 goals in 134 international games for Czechoslovakia.