Sion Top
HardWin Rate43.0%
Games158
Champion Counters
Cassiopeia Counters
Find Cassiopeia counters, difficult matchups and champions Cassiopeia performs well against.
Mid Patch 16.13.1 Updated Jul 2, 2026 op.gg data · 48h refresh
Weak Against10
Strong Against10
Best CounterSion (43.0%)
Best MatchupTryndamere (60.6%)
C Current tier: C Mid — view tier list
Weak Against — Champions That Counter Cassiopeia
Win rate shown from Cassiopeia's perspective — lower means a harder matchup.
Ekko Mid
HardWin Rate43.6%
Games544
Singed Top
HardWin Rate43.6%
Games110
Yorick Top
HardWin Rate43.7%
Games135
Urgot Top
HardWin Rate43.7%
Games119
Talon Mid
HardWin Rate44.4%
Games369
Qiyana Mid
HardWin Rate44.8%
Games362
Syndra Mid
HardWin Rate44.8%
Games2,079
Strong Against — Champions Cassiopeia Counters
Tryndamere Top
EasyWin Rate60.6%
Games137
Ornn Top
EasyWin Rate56.3%
Games174
Ambessa Top
EasyWin Rate56.1%
Games223
Mel Mid
EasyWin Rate56.0%
Games311
Mordekaiser Top
EasyWin Rate55.8%
Games267
Tristana Mid
EasyWin Rate55.3%
Games228
Sion Mid
EasyWin Rate55.2%
Games134
Vayne Top
EasyWin Rate55.2%
Games194
All Cassiopeia Matchups
| Opponent | Role | Type | Win Rate | Games | Details |
|---|---|---|---|---|---|
| Sion | Top | Counter | 43.0% | 158 | — |
| Ekko | Mid | Counter | 43.6% | 544 | — |
| Singed | Top | Counter | 43.6% | 110 | — |
| Yorick | Top | Counter | 43.7% | 135 | — |
| Urgot | Top | Counter | 43.7% | 119 | — |
| Talon | Mid | Counter | 44.4% | 369 | — |
| Qiyana | Mid | Counter | 44.8% | 362 | Matchup |
| Syndra | Mid | Counter | 44.8% | 2,079 | — |
| Vel'Koz | Mid | Counter | 44.9% | 167 | Matchup |
| Irelia | Top | Counter | 45.0% | 242 | — |
| Tryndamere | Top | Favorable | 60.6% | 137 | — |
| Ornn | Top | Favorable | 56.3% | 174 | — |
| Ambessa | Top | Favorable | 56.1% | 223 | — |
| Mel | Mid | Favorable | 56.0% | 311 | — |
| Mordekaiser | Top | Favorable | 55.8% | 267 | Matchup |
| Tristana | Mid | Favorable | 55.3% | 228 | — |
| Sion | Mid | Favorable | 55.2% | 134 | — |
| Vayne | Top | Favorable | 55.2% | 194 | — |
| Vex | Mid | Favorable | 54.6% | 407 | — |
| Naafiri | Mid | Favorable | 54.3% | 210 | — |
How to Use Cassiopeia Counter Data
Looking for reliable Cassiopeia counters? The matchup numbers below come straight from current ranked games in the Mid role, not from tier-list guesswork. The toughest lane opponents at the moment are Vel’Koz, LeBlanc, Gragas: against them Cassiopeia posts its lowest win rates in the current data set. The single strongest counter is Vel’Koz, where Cassiopeia wins just 39.5% of 109 recorded games. On the flip side, Cassiopeia performs well into Aatrox, Gnar, Mordekaiser, making them safer picks to face.
Each card shows the win rate from Cassiopeia’s perspective and the number of games behind it — a matchup with tens of thousands of games is far more trustworthy than one with a few hundred. The Easy/Even/Hard labels are computed from those win rates (below 48% reads as Hard, above 52% as Easy); they are a reading aid, not a separate source stat. Data comes from ranked games at Emerald rank and above across all regions, currently on patch 16.13.1, and refreshes automatically every 48 hours, so the numbers move with the meta. Counters are only half the picture: check the current Cassiopeia build for the strongest items and runes, or the Cassiopeia champion page for abilities and full details.
More Counter Pages
Cassiopeia Counters — FAQ
Sion is currently the strongest counter to Cassiopeia — Cassiopeia wins only 43.0% of 158 recorded games in that matchup. Other difficult opponents are listed in the Weak Against section above.
Cassiopeia performs best against Tryndamere, winning 60.6% of those games — see the full Strong Against list above.
Automatically every 48 hours, from ranked games at Emerald rank and above across all regions (currently patch 16.13.1).
Yes — every matchup record carries the patch it was collected on, and the whole page refreshes with each data update, so the numbers always describe the current patch rather than an old meta.