Seven of nine ATP Masters 1000 tournaments, including Canada and Cincinnati, will be 12-day events in 2025

The ATP Tour announced its 2025 calendar on Friday, with the biggest change affecting its top tier of tournaments, the Masters 1000s.

Five of the nine Masters events are already 12 days long: Indian Wells, Miami, Madrid, Rome and Shanghai. That number will increase to seven, with Canada (held in Toronto and Montreal, in alternating years) and Cincinnati growing to dozen-day tournaments in 2025.

The other significant change includes the addition of three 500-level tournaments: Dallas, Doha and Munich. All three events are at the 250 level on the 2024 ATP calendar.

The shift allows "additional weeks featuring side-by-side ATP 500 events," says the tour, "putting an increased spotlight on the category and creating a more consolidated narrative for fans."

The ATP Finals will remain in Turin, and the Next Gen ATP Finals will take place in Jeddah.

Other adjustments include, per the tour:

• Rescheduling of the Hamburg Open (ATP 500) from July to May.
• Relocation of the Cordoba Open (ATP 250) event to Mallorca, in the lead up to The Championships, Wimbledon.
• Rescheduling of the Mifel Tennis Open by Telcel Oppo (Los Cabos, ATP 250) from February to July.