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Sion Duos
Best duo partners for Sion 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 Sion
 Heimerdinger | 57.54% | 285 |
 Blitzcrank | 53.86% | 2,020 |
 Gwen | 53.20% | 703 |
 Singed | 53.08% | 341 |
 Taric | 52.73% | 330 |
 Xin Zhao | 52.69% | 668 |
 Poppy | 52.68% | 615 |
 Vex | 52.55% | 687 |
 Thresh | 52.54% | 3,698 |
 Rek'Sai | 52.27% | 551 |
 Wukong | 52.19% | 1,686 |
 Aurelion Sol | 52.06% | 705 |
Weakest pairings
 Dr. Mundo | 42.70% | 281 |
 Rumble | 43.12% | 269 |
 Sett | 43.29% | 298 |
 Jayce | 44.29% | 1,208 |
 Mel | 44.68% | 667 |
 Varus | 44.86% | 954 |
 Trundle | 44.94% | 247 |
 Ziggs | 45.03% | 584 |
 Jax | 45.08% | 579 |
 Smolder | 45.37% | 842 |
 Camille | 45.52% | 804 |
 Naafiri | 45.75% | 905 |
Frequently Asked Questions
4 Q&A- Who works best with Sion in League of Legends?
- Sion's highest-win-rate teammates right now are Heimerdinger (57.54% together), Blitzcrank (53.86%) and Gwen (53.20%), measured over recent high-elo ranked matches.
- What is the best duo partner for Sion in LoL solo queue?
- Queue with Heimerdinger (57.54% duo win rate), Blitzcrank (53.86%), or Gwen (53.20%) to maximize Sion's same-team win rate.
- Which teammates does Sion pair worst with?
- Sion's lowest-win-rate pairings are Dr. Mundo (42.70% together), Rumble (43.12%) and Sett (43.29%).
- How are Sion's duo synergy win rates calculated?
- Every Sion 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.