Sobeys Stadium, formerly Rexall Centre and Aviva Centre, is a tennis stadium in Toronto, Ontario, Canada, located on the grounds of York University's Keele Campus. The 12,500-capacity Stadium Court is the largest stadium at the tennis complex. Sobeys Stadium is the venue for the National Bank Open, a professional tournament on the ATP Tour and WTA circuits, held annually. Beginning 2021, Sobeys Stadium hosts the men's tournament in odd-numbered years and the women's event in even-numbered years, with the other gender's event held in Montreal in those years. The facility also is a year-round tennis training facility. The main stadium is occasionally used for seasonal concerts.