The Canadian Open (officially the National Bank Open presented by Rogers) is a premier annual professional tennis tournament held in Toronto and Montreal, making it the second-oldest active tennis tournament in the world after Wimbledon. It features both an ATP 1000 event for men and a WTA 1000 event for women, played on outdoor hardcourts, with the men's and women's competitions alternating host cities each year. The tournament's roots trace back to 1881, with the first official Canadian championship held in 1887, and it switched permanently from clay to hard courts in 1979. Originally a combined event, it split into separate men's and women's tournaments in the early 1980s, and since 2021, Toronto hosts the men's event in odd-numbered years and Montreal in even-numbered years (and vice-versa for women). Historically, sponsorship came from tobacco brands like Rothmans and Du Maurier until Rogers Communications took over in 2000. Notably, no Canadian man has won the singles title since Robert Bédard in 1958, while Victoria Mboko became the most recent Canadian women's champion in 2025.