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Cassiopeia Duos
Best duo partners for Cassiopeia in League of Legends — teammates it wins most and least with, ranked by measured win rate.
Win rates are live aggregates of ranked League of Legends matches from the last 30 days, recomputed daily. Per-matchup sample sizes are shown alongside every number.
Best teammates for Cassiopeia
 Zac | 57.40% | 608 |
 Zilean | 57.05% | 631 |
 Riven | 56.20% | 411 |
 Tryndamere | 56.20% | 468 |
 Vex | 56.16% | 219 |
 Aurelion Sol | 55.86% | 222 |
 Nidalee | 55.69% | 659 |
 Kassadin | 55.65% | 230 |
 Nunu & Willump | 55.53% | 407 |
 Syndra | 55.45% | 615 |
 Katarina | 55.01% | 629 |
 Gwen | 54.97% | 362 |
Weakest pairings
 Mel | 39.80% | 201 |
 Smolder | 42.96% | 412 |
 Orianna | 43.60% | 250 |
 Nilah | 44.27% | 131 |
 Gnar | 44.58% | 554 |
 Ziggs | 45.56% | 180 |
 Rumble | 46.02% | 226 |
 Kayle | 46.21% | 277 |
 Seraphine | 46.36% | 934 |
 Ashe | 46.41% | 765 |
 Varus | 46.43% | 603 |
 Shyvana | 46.65% | 538 |
Frequently Asked Questions
4 Q&A- Who works best with Cassiopeia in League of Legends?
- Cassiopeia's highest-win-rate teammates right now are Zac (57.40% together), Zilean (57.05%) and Riven (56.20%), measured over recent high-elo ranked matches.
- What is the best duo partner for Cassiopeia in LoL solo queue?
- Queue with Zac (57.40% duo win rate), Zilean (57.05%), or Riven (56.20%) to maximize Cassiopeia's same-team win rate.
- Which teammates does Cassiopeia pair worst with?
- Cassiopeia's lowest-win-rate pairings are Mel (39.80% together), Smolder (42.96%) and Orianna (43.60%).
- How are Cassiopeia's duo synergy win rates calculated?
- Every Cassiopeia duo percentage is the observed win rate of high-elo ranked matches where both champions played on the same team, gated at a 25-game minimum sample.
Data updated Oct 25, 2026.