- Win Rate
- 50.5%
- Pick Rate
- 4.1%
- Ban Rate
- 7.7%
Viktor vs Cassiopeia
- Patch
- 26.19
- Games
- 3,725
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 4, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Viktor vs Cassiopeia is a decisive matchup in LoL patch 26.19. Viktor wins with a 71.4% win rate (+42.9%) over Cassiopeia based on 14 games. Viktor holds the advantage in both the early and late game. Below you'll find the best Viktor build, runes, laning stats, and strategies for the Viktor vs Cassiopeia matchup.
Viktor Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Viktor performs against them. You'll get head-to-head win rates, laning stats, the best build and runes for the matchup, and early vs late game analysis — all based on real ranked data.
Who wins Viktor vs Cassiopeia?
Viktor wins 31.8% of these games. With this many games the true rate is most likely between 16.4% and 52.7% (95% range).
- Expected
- 53.2% From both champions' overall Mid win rates
- Matchup effect
- −21.3 pts Observed minus expected
- Sample
- 22 games Lane: Mid
- vs patch 26.18
- — Not enough games on both patches
Lane: Mid · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
Key takeaways
- Current data slightly favors Cassiopeia, but the sample is too limited for a strong conclusion: Viktor wins 31.8% of 22 games (95% range 16.4–52.7%).
- That is 21.3 points worse for Viktor than both champions' overall Mid win rates predict (53.2%), so the matchup itself works against this pick.
- Viktor players pick Hextech Rocketbelt far more often against Cassiopeia: 15.9% of their other Mid games, 31.8% here.
How we calculate this
Games: ranked Solo/Duo and Flex games on the North America server from the patch shown. Remakes (games under 5 minutes) are excluded.
A game only counts when Viktor and Cassiopeia played the same position on opposite teams, so roaming, lane swaps within a team or a champion merely being in the same game never count as this matchup.
The 95% range is a Wilson score interval. Confidence comes from how wide that range is: within ±3 points is very high, ±5 high, ±8 moderate, anything wider low. Below 20 games a matchup is not classified at all.
Expected win rate combines both champions’ win rates in this lane (same games and filters) with the log5 formula: E = A(1−B) / (A(1−B) + B(1−A)). Matchup effect = observed − expected.
"What changes" compares Viktor's choices in this matchup with the same champion's other games in the same lane, and lists a change only when it is at least 3 points and statistically significant (two-proportion z-test, |z| ≥ 2, 20+ games).
Results are not split by rank: the sample per rank is too small for honest per-rank matchup numbers.
Viktor vs Cassiopeia Laning Stats
Only 21 games have a 15-minute snapshot so far — the lane-phase numbers appear from 30.
Whole-game averages
Viktor vs Cassiopeia Win Rate by Game Length
Viktor's win rate against Cassiopeia by game length. The dot is the win rate, the bar its 95% range and the dashed line the champion's usual win rate at that length. Lengths with fewer than 25 games are left blank.
No game length stands out: Viktor's results against Cassiopeia in short and long games are within the margin of error of each other.
Viktor vs Cassiopeia Power Spikes
Who is ahead at each stage, measured from these games. A stage reads "Even" when the difference is inside the margin of error, and "Insufficient data" when there are too few games to tell.
- Lane (15 min)Insufficient data
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Viktor Changes Against Cassiopeia
Choices Viktor players make noticeably more or less often in this matchup than in their other Mid games.
Usually15.9%vs Cassiopeia31.8%+15.9 pts
CryptbloomItemUsually2.0%vs Cassiopeia13.6%+11.7 pts
SwiftmarchBootsUsually4.4%vs Cassiopeia13.6%+9.2 pts
Second WindRuneUsually1.4%vs Cassiopeia9.1%+7.7 pts
Tenacity and Slow Resist (defense)Stat shardUsually1.8%vs Cassiopeia9.1%+7.3 pts
Doran's Ring + Health Potion + Health Potion + Refillable Potion + Stealth WardStarting itemsUsuallyunder 0.5%vs Cassiopeia4.5%+4.5 pts
Doran's Ring + Health Potion + Health Potion + Health Potion + Health Potion + Control Ward + Stealth WardStarting itemsUsuallyunder 0.5%vs Cassiopeia4.5%+4.5 pts- Doran's Ring + Health Potion + Health Potion + Refillable PotionStarting itemsUsuallyunder 0.5%vs Cassiopeia4.5%+4.5 pts
Best Viktor Build vs Cassiopeia
Usual Viktor build (Mid)
93.3% win rate · 15 games
Against Cassiopeia
Not enough matchup-specific build data: only 1 of 10 Viktor games against Cassiopeia carried a complete build, which is too few to recommend an item path from. Use Viktor's standard build instead.
- Skill priority: E > Q > W — the same as usual.
Builds are ranked by the lower edge of their win rate range, not the raw win rate, so a build seen in a handful of wins never outranks a proven one.
Best Viktor Runes vs Cassiopeia
Usual Viktor runes (Mid)
Deathfire Touch
76.5% win rate · 17 games
Against Cassiopeia
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Viktor draft in Draft Lab
Draft Lab lays out both teams lane by lane with live matchup win rates, damage profiles and game-phase lean, and suggests picks and bans from current meta data.
- Full 5v5 draft board
- Lane matchup win rates
- Pick and ban suggestions
Viktor matchup data for League of Legends patch 26.19. The table below shows Viktor's win rate, gold difference, and performance stats against every champion in the current meta. Click any champion name to see a detailed head-to-head breakdown including the best Viktor build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Viktor Matchups
Hardest for Viktor
Easiest for Viktor
Win rate and games for each matchup. Lists are ranked by the edge of the 95% range so small samples cannot top them; matchups with at least 50 games only.
Help us maintain accuracy! If you notice incorrect stats, missing data, or any issues, your feedback directly improves the quality of our data for the entire community.
Viktor vs Cassiopeia FAQ - Patch 26.19
Who wins Viktor vs Cassiopeia?
Current data slightly favors Cassiopeia, but the sample is too limited for a strong conclusion: Viktor wins 31.8% of 22 games (95% range 16.4–52.7%).
What is Viktor's win rate against Cassiopeia?
Viktor wins 31.8% of 22 Mid games against Cassiopeia on patch 26.19 (95% range 16.4–52.7%). Based on both champions' overall Mid win rates, 53.2% would be expected.
Does Viktor counter Cassiopeia?
Not clearly. Viktor wins 31.8% of 22 games against Cassiopeia, and the 95% range (16.4–52.7%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Viktor or Cassiopeia?
There are not enough games with a 15-minute snapshot yet (21) to say who wins lane.
Does Viktor outscale Cassiopeia?
There are too few games of each length to tell yet.
When is Cassiopeia strongest against Viktor?
On current data there is no stage of the game where Cassiopeia is ahead of Viktor beyond the margin of error.
What should Viktor build against Cassiopeia?
There are not enough games for a matchup-specific core, so use Viktor's usual Mid core: Lich Bane, Mejai's Soulstealer, Blackfire Torch. The biggest change against Cassiopeia: Hextech Rocketbelt (15.9% usually, 31.8% here).
What runes should Viktor use against Cassiopeia?
Use Viktor's usual Deathfire Touch page (Sorcery + Resolve); there are too few games for a matchup-specific page. The biggest change against Cassiopeia: Second Wind (1.4% usually, 9.1% here).