Career
Jantunen played for Reipas Lahti in the Finnish premier division Mestaruussarja before joining Civil Defense Málaga in 1977 as the first ever Finnish football player in Spain. In 1979 he was signed by Bristol City. Jantunen was the first Finn playing the top level in England.
He also played for IFK Eskilstuna and Västerås Saskatchewan in Sweden.
Jantunen was capped 26 times for Finland, making his international debut in September 1975 against the Netherlands in Nijmegen.
