

The best counters to Kai'Sa (kaisa) in Master+ coordinated 5v5 games as Bot are Katarina (57.5% win rate, 100 games), Malzahar (64.1% win rate, 25 games) and Aphelios (56.3% win rate, 557 games). These picks are the strongest observed answers to Kai'Sa in the current sample. Each win rate is that counter's result versus Kai'Sa in coordinated team games, not a Solo Queue lane stat.
The best calculated counters to Kai'Sa (kaisa) in Master+ coordinated 5v5 are Katarina (57.5% win rate, 100 games), Malzahar (64.1% win rate, 25 games) and Aphelios (56.3% win rate, 557 games).
Kai'Sa (kaisa) has a 52.8% win rate across 1,801 Master+ coordinated 5v5 games as Bot. That sample is Flex 5 and Ranked 5v5 team play, not Solo Queue.
draft-meta-latest · Public draft-meta aggregate from benchmark JSONL matches with source-tier weighting and patch recency weights.
Draft-meta and champion-coordinated rows use different populations. Do not merge sample counts or treat pairwise synergies as a measured 5-man shell.