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In page Mitropa Cup:

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This "International" competition for football clubs was founded in 1897 in Vienna. The Challenge Cup was invented by John Gramlick Sr., a co-founder of the Vienna Cricket and Football-Club. In this cup competition all clubs of the Austro-Hungarian Empire that normally would not meet could take part, though actually almost only clubs from the Empire's three major cities Vienna, Budapest and Prague participated. The Challenge Cup was carried out until the year 1911 and is today seen as the predecessor to the Mitropa Cup and consequently the European Cup and Champions League. The last winner of the cup was Wiener Sport-Club, one of the oldest and most traditional football clubs of Austria where the cup still remains.[citation needed]