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Zac Duos
Best duo partners for Zac 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 Zac
 Cassiopeia | 57.40% | 608 |
 Kassadin | 55.89% | 773 |
 Azir | 55.76% | 538 |
 Riven | 55.67% | 767 |
 Brand | 55.57% | 601 |
 Quinn | 55.26% | 456 |
 Pyke | 55.09% | 1,394 |
 Karthus | 55.00% | 360 |
 Samira | 54.89% | 931 |
 Shen | 54.63% | 983 |
 Nidalee | 54.58% | 469 |
 Tristana | 54.43% | 3,408 |
Weakest pairings
 Mel | 43.37% | 611 |
 Smolder | 44.56% | 846 |
 Heimerdinger | 45.52% | 413 |
 Rengar | 45.90% | 451 |
 Ezreal | 46.03% | 2,907 |
 Zyra | 46.08% | 740 |
 Dr. Mundo | 46.20% | 723 |
 K'Sante | 46.59% | 1,041 |
 Illaoi | 46.90% | 467 |
 Viego | 46.91% | 761 |
 Miss Fortune | 47.01% | 1,153 |
 Amumu | 47.06% | 272 |
Frequently Asked Questions
4 Q&A- Who works best with Zac in League of Legends?
- Zac's highest-win-rate teammates right now are Cassiopeia (57.40% together), Kassadin (55.89%) and Azir (55.76%), measured over recent high-elo ranked matches.
- What is the best duo partner for Zac in LoL solo queue?
- Queue with Cassiopeia (57.40% duo win rate), Kassadin (55.89%), or Azir (55.76%) to maximize Zac's same-team win rate.
- Which teammates does Zac pair worst with?
- Zac's lowest-win-rate pairings are Mel (43.37% together), Smolder (44.56%) and Heimerdinger (45.52%).
- How are Zac's duo synergy win rates calculated?
- Every Zac 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.