Sule broke through the 70 m barrier in 1934, improving his Estonian record to 71.48 and again placing second on the annual world list. At the inaugural European Championships that summer, also held in Turin, he threw 69.31 and placed third behind the top two from the 1932 Olympics, Finland's Matti Järvinen and Matti Sippala; he was named Estonia's top athlete that year by the Tallinn Sports Press Club.