- Win Rate
- 49.2%
- Pick Rate
- 6.3%
- Ban Rate
- 12.1%
Sylas vs Cassiopeia
- Patch
- 26.19
- Games
- 12,547
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 10, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Sylas vs Cassiopeia is a decisive matchup in LoL patch 26.19. Sylas wins with a 55.6% win rate (+11.1%) over Cassiopeia based on 9 games. Sylas holds the advantage in both the early and late game. Below you'll find the best Sylas build, runes, laning stats, and strategies for the Sylas vs Cassiopeia matchup.
Sylas Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Sylas 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 Sylas vs Cassiopeia?
Sylas wins 53.6% of these games. With this many games the true rate is most likely between 35.8% and 70.5% (95% range).
- Expected
- 51.7% From both champions' overall Mid win rates
- Matchup effect
- +1.8 pts Observed minus expected
- Sample
- 28 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 Sylas, but the sample is too limited for a strong conclusion: Sylas wins 53.6% of 28 games (95% range 35.8–70.5%).
- Both champions' overall Mid win rates predict 51.7% for Sylas; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Sylas players pick the Q > W > E skill order far more often against Cassiopeia: 14.5% of their other Mid games, 28.6% 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 Sylas 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 Sylas'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.
Sylas vs Cassiopeia Laning Stats
Only 28 games have a 15-minute snapshot so far — the lane-phase numbers appear from 30.
Whole-game averages
Sylas vs Cassiopeia Win Rate by Game Length
Sylas'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: Sylas's results against Cassiopeia in short and long games are within the margin of error of each other.
Sylas 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 Sylas Changes Against Cassiopeia
Choices Sylas players make noticeably more or less often in this matchup than in their other Mid games.
- Q > W > Ethe Q > W > E skill orderSkill priorityUsually14.5%vs Cassiopeia28.6%+14.1 pts
Usually4.7%vs Cassiopeia14.3%+9.6 pts
Manaflow BandRuneUsually2.7%vs Cassiopeia10.7%+8.0 pts
Stormraider's SurgeKeystoneUsually0.9%vs Cassiopeia7.1%+6.3 pts
Attack Speed (offense)Stat shardUsually1.8%vs Cassiopeia7.1%+5.4 pts
Sixth SenseRuneUsually1.8%vs Cassiopeia7.1%+5.3 pts
Doran's Helm + Health PotionStarting itemsUsuallyunder 0.5%vs Cassiopeia3.6%+3.6 pts
Doran's Shield + Health Potion + Stealth Ward + Stealth WardStarting itemsUsuallyunder 0.5%vs Cassiopeia3.6%+3.6 pts
Best Sylas Build vs Cassiopeia
Usual Sylas build (Mid)
94.4% win rate · 18 games
Against Cassiopeia
Not enough matchup-specific build data: only 4 of 11 Sylas games against Cassiopeia carried a complete build, which is too few to recommend an item path from. Use Sylas's standard build instead.
- Skill priority: W > E > Q — 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 Sylas Runes vs Cassiopeia
Usual Sylas runes (Mid)
Conqueror
68.8% win rate · 32 games
Against Cassiopeia
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Sylas 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
Sylas matchup data for League of Legends patch 26.19. The table below shows Sylas'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 Sylas build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Sylas Matchups
Hardest for Sylas
Easiest for Sylas
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.
Sylas vs Cassiopeia FAQ - Patch 26.19
Who wins Sylas vs Cassiopeia?
Current data slightly favors Sylas, but the sample is too limited for a strong conclusion: Sylas wins 53.6% of 28 games (95% range 35.8–70.5%).
What is Sylas's win rate against Cassiopeia?
Sylas wins 53.6% of 28 Mid games against Cassiopeia on patch 26.19 (95% range 35.8–70.5%). Based on both champions' overall Mid win rates, 51.7% would be expected.
Does Sylas counter Cassiopeia?
Not clearly. Sylas wins 53.6% of 28 games against Cassiopeia, and the 95% range (35.8–70.5%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Sylas or Cassiopeia?
There are not enough games with a 15-minute snapshot yet (28) to say who wins lane.
Does Sylas outscale Cassiopeia?
There are too few games of each length to tell yet.
When is Cassiopeia strongest against Sylas?
On current data there is no stage of the game where Cassiopeia is ahead of Sylas beyond the margin of error.
What should Sylas build against Cassiopeia?
There are not enough games for a matchup-specific core, so use Sylas's usual Mid core: Shadowflame, Hextech Rocketbelt, Mejai's Soulstealer. The biggest change against Cassiopeia: Mejai's Soulstealer (4.7% usually, 14.3% here).
What runes should Sylas use against Cassiopeia?
Use Sylas's usual Conqueror page (Precision + Resolve); there are too few games for a matchup-specific page. The biggest change against Cassiopeia: Manaflow Band (2.7% usually, 10.7% here).