The champions that counter Zac hardest in top lane are Cassiopeia (35.38%), Singed (40.9%) and Zaahen (43.23%) — those are Zac's own pooled win rates. The easiest matchups are Maokai (65.75%), Mel (59.83%) and Sejuani (59.76%).
71 researched matchup guides for Zac in top lane, most-played first. Win rates are Zac's side, pooled Emerald+ games sampled July 2026.
| Matchup | Win rate | Games | Favour |
|---|---|---|---|
| Zac vs Garen | 46.48% | 1,889 | Leans Garen |
| Zac vs Yone | 49.94% | 1,694 | Even |
| Zac vs Darius | 46.56% | 1,671 | Leans Darius |
| Zac vs Sion | 50.89% | 1,468 | Leans Zac |
| Zac vs Aatrox | 48.51% | 1,311 | Leans Aatrox |
| Zac vs Sett | 48.92% | 1,298 | Leans Sett |
| Zac vs Renekton | 49.68% | 1,240 | Even |
| Zac vs Shen | 45.55% | 1,023 | Leans Shen |
| Zac vs Ornn | 45.51% | 969 | Leans Ornn |
| Zac vs Riven | 48.37% | 889 | Leans Riven |
| Zac vs Dr. Mundo | 49.89% | 870 | Even |
| Zac vs Yorick | 49.89% | 870 | Even |
| Zac vs Zaahen | 43.23% | 805 | Zaahen favoured |
| Zac vs Tryndamere | 47.47% | 750 | Leans Tryndamere |
| Zac vs Malphite | 47.7% | 740 | Leans Malphite |
| Zac vs Yasuo | 47.69% | 713 | Leans Yasuo |
| Zac vs Olaf | 44.87% | 711 | Olaf favoured |
| Zac vs Vayne | 47.56% | 698 | Leans Vayne |
| Zac vs Singed | 40.9% | 692 | Singed favoured |
| Zac vs Volibear | 47.7% | 673 | Leans Volibear |
| Zac vs Urgot | 45.72% | 643 | Leans Urgot |
| Zac vs Illaoi | 47.3% | 630 | Leans Illaoi |
| Zac vs Pantheon | 47.22% | 612 | Leans Pantheon |
| Zac vs Gangplank | 48.09% | 601 | Leans Gangplank |
| Zac vs Locke | 48.57% | 593 | Leans Locke |
| Zac vs Jayce | 47.39% | 517 | Leans Jayce |
| Zac vs K'Sante | 51.67% | 480 | Leans Zac |
| Zac vs Tahm Kench | 48.21% | 475 | Leans Tahm Kench |
| Zac vs Rumble | 51.39% | 469 | Leans Zac |
| Zac vs Irelia | 44.67% | 450 | Irelia favoured |
| Zac vs Graves | 50.81% | 433 | Leans Zac |
| Zac vs Nautilus | 50.46% | 432 | Even |
| Zac vs Jax | 43.88% | 417 | Jax favoured |
| Zac vs Teemo | 47.29% | 406 | Leans Teemo |
| Zac vs Lucian | 54.07% | 405 | Leans Zac |
| Zac vs Gnar | 49.88% | 401 | Even |
| Zac vs Vladimir | 44.81% | 395 | Vladimir favoured |
| Zac vs Poppy | 49.21% | 378 | Leans Poppy |
| Zac vs Sylas | 51.94% | 360 | Leans Zac |
| Zac vs Nasus | 44.13% | 349 | Nasus favoured |
| Zac vs Warwick | 45.98% | 348 | Leans Warwick |
| Zac vs Fiora | 45.62% | 331 | Leans Fiora |
| Zac vs Karma | 49.69% | 320 | Even |
| Zac vs Kayle | 52.06% | 315 | Leans Zac |
| Zac vs Camille | 48.45% | 291 | Leans Camille |
| Zac vs Gwen | 45.26% | 274 | Leans Gwen |
| Zac vs Ambessa | 50.92% | 271 | Leans Zac |
| Zac vs Akali | 50.46% | 270 | Even |
| Zac vs Quinn | 45.21% | 261 | Leans Quinn |
| Zac vs Wukong | 48.82% | 254 | Leans Wukong |
| Zac vs Cho'Gath | 51.78% | 253 | Leans Zac |
| Zac vs Galio | 48.26% | 230 | Leans Galio |
| Zac vs Mordekaiser | 48.69% | 204 | Leans Mordekaiser |
| Zac vs Ryze | 50.49% | 204 | Even |
| Zac vs Kennen | 49.74% | 189 | Even |
| Zac vs Master Yi | 49.39% | 164 | Even |
| Zac vs Swain | 44.17% | 163 | Swain favoured |
| Zac vs Kled | 49.07% | 161 | Leans Kled |
| Zac vs Trundle | 47.1% | 155 | Leans Trundle |
| Zac vs Heimerdinger | 53.02% | 149 | Leans Zac |
| Zac vs Kassadin | 47.52% | 141 | Leans Kassadin |
| Zac vs Gragas | 44.6% | 139 | Gragas favoured |
| Zac vs Akshan | 53.38% | 133 | Leans Zac |
| Zac vs Aurora | 52.71% | 129 | Leans Zac |
| Zac vs Lillia | 48.8% | 125 | Leans Lillia |
| Zac vs Mel | 59.83% | 117 | Zac favoured |
| Zac vs Ziggs | 50.91% | 110 | Leans Zac |
| Zac vs Sejuani | 59.76% | 82 | Zac favoured |
| Zac vs Neeko | 54.67% | 75 | Leans Zac |
| Zac vs Maokai | 65.75% | 73 | Zac favoured |
| Zac vs Cassiopeia | 35.38% | 65 | Cassiopeia favoured |