|Date of birth||27 May 1932|
|Place of birth||Argentina|
|Height||1.82 m (6 ft 0 in)|
|* Senior club appearances and goals counted for the domestic league only and correct as of November 2008|
Varacka played for three of the big five teams in Argentina. He started his career in 1952 with Independiente. In 1954 he played and scored in a famous 6–0 win over Real Madrid. He joined River Plate in 1960 where he played for six seasons.
Varacka started his managerial career with Gimnasia y Esgrima de La Plata in 1968. He went on to serve as the manager of Boca Juniors and River Plate. he won two Colombian league titles during his four spells as manager of Atlético Junior (1977 & 1980). In 1981 his Argentinos Juniors team dramatically avoided relegation on the last day of the season by beating his former team San Lorenzo 1–0, causing their relegation instead. Varacka also managed the Argentine national team in the 1974 world cup alongside Vladislao Cap.