<page_title> List of Grand Prix motorcycle racing World Champions by year </page_title> <section_title> List </section_title> <table> <cell> Italy Bruno Ruffo (Moto Guzzi) <col_header> 250cc </col_header> <row_header> 1949 </row_header> </cell> <cell> Italy Bruno Ruffo (Mondial) <col_header> 125cc </col_header> <row_header> 1950 </row_header> </cell> <cell> Italy Bruno Ruffo (Moto Guzzi) <col_header> 250cc </col_header> <row_header> 1951 </row_header> </cell> </table>
Bruno Ruffo won three Grand Prix World Championships.