Mario Tennis Fever launched on Switch 2 in solid shape earlier this year, but Nintendo has kept the patches coming regardless. The third update in the game's short post-launch life dropped on April 22, 2026, and while it's a small one, it does address a genuine competitive issue that Ranked Match players will appreciate.
What ver. 1.0.3 actually changes
The full patch notes, posted to the Nintendo Support site, are brief enough to quote in their entirety:
info
"We have strengthened countermeasures and readjusted the timing of when rankings are adjusted to address a bug where rankings are not adjusted on the 1st of each month at 5:00 P.M. (Pacific time) for Ranked Match. Balance adjustments are planned for future updates."
That's the whole thing. The bug was preventing monthly ranking resets from firing correctly, which in a competitive mode like Ranked Match is more disruptive than it sounds. Missing a scheduled ranking adjustment means players could be stuck in the wrong tier or miss progression resets they were counting on. Nintendo has both fixed the timing and added extra countermeasures to stop it happening again.
The bigger picture: balance changes are on the way
Here's the thing that makes this patch worth paying attention to beyond the single bug fix: Nintendo explicitly confirmed that balance adjustments are planned for future updates. That's not a throwaway line. For a tennis game where character matchups and shot mechanics matter at higher levels of play, balance patches can meaningfully shift the competitive scene.
Mario Tennis Fever follows a similar post-launch trajectory to Mario Tennis Aces on Switch, which received a long run of balance updates after launch that reshaped how characters like Waluigi and Bowser Jr. performed competitively. If Fever is heading down the same road, competitive players should stay alert to what Nintendo adjusts and when.
Small patch, but the cadence matters
Three patches in a relatively short post-launch window tells you Nintendo is actively monitoring the game. None of these updates have been dramatic, but consistent small fixes tend to signal that bigger balance work is being prepared carefully rather than rushed out. The key here is that Nintendo flagged future changes directly in the patch notes, which is a cleaner communication approach than leaving players to speculate.
For anyone grinding Ranked Match on Switch 2, you'll want to make sure the update is applied before your next session. Check your game's version number to confirm you're on ver. 1.0.3. For more on what's happening across Nintendo's Switch 2 library, browse the latest gaming news, guides and coverage as those balance updates arrive.