

The best counters to Janna in Master+ coordinated 5v5 games as Support are Zoe (64.4% win rate, 16 games), Senna (54.4% win rate, 89 games) and Seraphine (54.3% win rate, 183 games). These picks are the strongest observed answers to Janna in the current sample. Each win rate is that counter's result versus Janna in coordinated team games, not a Solo Queue lane stat.
The best calculated counters to Janna in Master+ coordinated 5v5 are Zoe (64.4% win rate, 16 games), Senna (54.4% win rate, 89 games) and Seraphine (54.3% win rate, 183 games).
Janna has a 52.0% win rate across 6,198 Master+ coordinated 5v5 games as Support. 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.