Nintendo updates Mario Tennis Fever to fix Ranked Match bug on Switch 2

Nintendo rolled out version 1.0.3 for Mario Tennis Fever on Switch 2 and moved quickly to address a flaw in one of the game’s most visible competitive systems. The update fixed a Ranked Match bug that had prevented rankings from being adjusted on the first of each month at 5:00 p.m. Pacific time, 9:00 a.m. in Japan. Nintendo said it strengthened countermeasures and readjusted the timing for ranking updates, a narrow technical change that matters most to anyone trying to treat the game’s online ladder as a serious measure of skill.

That makes the patch more than routine maintenance. Mario Tennis Fever launched exclusively for Nintendo Switch 2 on February 12, 2026, and Nintendo has positioned it around competitive and social play, with online singles and doubles, Online Room, Ranked Matches, local play for up to four players, and GameShare support. When a ranking reset breaks on a monthly schedule, it undercuts the sense that the system is being watched and maintained after release. Fixing it quickly sends a different message: Nintendo is willing to intervene when the live game stops behaving the way its players expect.

The update also lands in a game built to make a statement for the series. Nintendo says Mario Tennis Fever has 38 playable characters, the most in series history, along with 30 Fever Rackets that add special effects. Its official materials also list Tournament, Trial Towers, Mix It Up, Wonder Court Match, Forest Court Match, Ring Shot, Online Room, Ranked Matches, Swing Mode and Adventure mode. That mix of modes gives Camelot and Nintendo a wide surface area to keep stable, from local couch sessions to ranked play that depends on monthly timing and version parity.

Nintendo’s Japanese update notice adds another practical detail: online features require the latest update, and local wireless and LAN play cannot be used between different versions. That kind of restriction turns a patch into a gatekeeper for everyday play, especially for families, office groups and local tournament scenes that move between online and offline sessions. In that sense, version 1.0.3 is not just a bug fix. It is a test of whether Nintendo can keep a new Switch 2 release feeling supported after launch, with future balance adjustments already planned for another update.