<P> The Canadian Open (also known as the Canada Masters, and known as the Rogers Cup presented by National Bank for sponsorship reasons) is an annual tennis tournament held in Canada . The men's competition is a Masters 1000 event on the Association of Tennis Professionals (ATP) tour . The women's competition is a Premier 5 tournament on the Women's Tennis Association (WTA) tour . The competition is played on hard courts . </P> <P> The events alternate from year to year between the cities of Montreal and Toronto . Since 1980 in odd - numbered years the men's tournament is held in Montreal, while the women's tournament is held in Toronto, and vice versa in even - numbered years . Before 2011, they were held during separate weeks in the July--August period, now the two competitions are held during the same week in August . The Toronto tournament is held at the Aviva Centre and the Montreal tournament is held at the Uniprix Stadium . </P> <P> The current singles champions as of the 2017 tournament are Alexander Zverev (def . Roger Federer) and Elina Svitolina (def . Caroline Wozniacki). </P> <P> The men's tournament began in 1881, and was held at the Toronto Lawn Tennis Club, while the women's competition was first held in 1892 . Of the major tennis tournaments in the world today, only Wimbledon and the US Open have been around longer . </P>

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