Ryser started with road racing and won a national title in 1899.^[1] The same year he turned professional and won a national title in motor-paced racing. Although in 1908 he became the first Swiss cyclist to win a world title in this discipline, his career was marred with bad luck. Eight days after the race, his pacer Joseph Black died in a race in Düsseldorf. Next year Ryser himself got into a serious accident in Berlin – his pacer Emil Borchardt while trying to avoid a fallen rider hit the stands; his motorcycle exploded killing nine people. Shortly after the outbreak of World War I, Ryser was detained for alleged espionage while racing in Poland, whereas his pacemaker was deported to Siberia. Ryser died from a stroke in Berlin, aged 42.

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