Tagliarol, the 2008 Olympic gold medallist, entered the tournament as the 28th seed before beating No. 3 Novosjolov.
Germany's Joerg Fiedler finished tied for third with Hungary's Gabor Boczko after losing to Tagliariol in the semifinals.
Fiedler was coming off a victory over reigning Olympic gold medallist and top-seeded Ruben Limardo Gascon of Venezuela, who finished sixth.
Marc-Antoine Blais-Belanger was the top Canadian at the event. The Montreal native finished 28th.