|Date of birth||28 April 1900|
|Place of birth||Austria-Hungary|
|Date of death||20 October 1973(aged 73)|
|Place of death||Czechoslovakia|
|Playing position||Midfielder / Manager|
|1915–1918||FK Viktoria Žižkov|
|1918–1921||FK Viktoria Žižkov|
|* Senior club appearances and goals counted for the domestic league only|
Seifert played for three teams based in the city of Prague. He won the Czechoslovak First League with Slavia Prague in 1925, 1929 and 1931. Seifert was a member of the Czechoslovakia national team and participated at the 1920 Summer Olympics and 1924 Summer Olympics.
After finishing his active career, Seifert started to work as a football manager. He coached most notably Slavia Prague. Under his management, Slavia won the Czechoslovak First League four times, in 1940, 1941, 1942 and 1943. He later led also the youth teams at Slavia.
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