Nintendo has announced the Mario Tennis Fever Open October 2026 tournament for October 24. The opening bracket starts at noon CDT, with the top four scheduled for a livestream beginning at 3 p.m. CDT.

Battlefy registration closes at 11:30 a.m. CDT on tournament day. Entry has age and residency restrictions and requires access to a Switch 2, the game, and Nintendo Switch Online; see Nintendo’s announcement and the full rules.

Competition begins with one-on-one, best-of-three matches in a single-elimination bracket. The final four switch to double elimination. All characters and Fever Rackets are permitted. Prize packages include trophies and NintendoVS merchandise.