- Win Rate
- 50.3%
- Pick Rate
- 1.1%
- Ban Rate
- 1.4%
Kassadin vs Sylas
- Patch
- 26.19
- Games
- 976
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 4, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Kassadin vs Sylas is a decisive matchup in LoL patch 26.19. Sylas wins with a 59.1% win rate (+18.2%) over Kassadin based on 22 games. Kassadin wins the early laning phase while Sylas scales better into the late game. Below you'll find the best Kassadin build, runes, laning stats, and strategies for the Kassadin vs Sylas matchup.
Kassadin Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Kassadin 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 Kassadin vs Sylas?
Kassadin wins 46.8% of these games. With this many games the true rate is most likely between 34.9% and 59.0% (95% range).
- Expected
- 51.0% From both champions' overall Mid win rates
- Matchup effect
- −4.2 pts Observed minus expected
- Sample
- 62 games Lane: Mid
- vs patch 26.18
- −1.6 pts Within normal patch-to-patch noise
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: Kassadin wins 46.8% of 62 games (95% range 34.9–59.0%).
- Both champions' overall Mid win rates predict 51.0% for Kassadin; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Neither side reliably wins the lane: the average gold difference at 15 minutes is 102, within the margin of error (62 games).
- Kassadin players pick Health Scaling (defense) far more often against Sylas: 87.3% of their other Mid games, 96.8% 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 Kassadin and Sylas 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 Kassadin'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.
Kassadin vs Sylas Laning Stats
At 15 minutes
Whole-game averages
Kassadin vs Sylas Win Rate by Game Length
Kassadin's win rate against Sylas 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: Kassadin's results against Sylas in short and long games are within the margin of error of each other.
Kassadin vs Sylas 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)EvenKassadin gold at 15: +102
- First itemSylasKassadin: 11.4 min · Sylas: 10.9 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Kassadin Changes Against Sylas
Choices Kassadin players make noticeably more or less often in this matchup than in their other Mid games.
Health Scaling (defense)Stat shardUsually87.3%vs Sylas96.8%+9.5 pts45.0% WR here
ShadowflameItemUsually4.5%vs Sylas12.9%+8.4 pts
Lich BaneItemUsually4.2%vs Sylas11.3%+7.1 pts
Manaflow BandRuneUsually5.0%vs Sylas11.3%+6.3 pts
Best Kassadin Build vs Sylas
Usual Kassadin build (Mid)
93.0% win rate · 43 games
Against Sylas
Not enough matchup-specific build data: only 12 of 45 Kassadin games against Sylas carried a complete build, which is too few to recommend an item path from. Use Kassadin's standard build instead.
- Kassadin usually completes Rod of Ages first, at 11.4 min (median of 50 games).
- Sylas usually completes Hextech Rocketbelt first, at 10.9 min (median of 45 games).
- Skill priority: E > W > 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 Kassadin Runes vs Sylas
Usual Kassadin runes (Mid)
First Strike
68.0% win rate · 25 games
Against Sylas
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Kassadin 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
Kassadin matchup data for League of Legends patch 26.19. The table below shows Kassadin'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 Kassadin build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Kassadin Matchups
Hardest for Kassadin
Easiest for Kassadin
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.
Kassadin vs Sylas FAQ - Patch 26.19
Who wins Kassadin vs Sylas?
Current data slightly favors Sylas, but the sample is too limited for a strong conclusion: Kassadin wins 46.8% of 62 games (95% range 34.9–59.0%).
What is Kassadin's win rate against Sylas?
Kassadin wins 46.8% of 62 Mid games against Sylas on patch 26.19 (95% range 34.9–59.0%). Based on both champions' overall Mid win rates, 51.0% would be expected.
Does Kassadin counter Sylas?
Not clearly. Kassadin wins 46.8% of 62 games against Sylas, and the 95% range (34.9–59.0%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Kassadin or Sylas?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 102, within the margin of error (62 games).
Does Kassadin outscale Sylas?
There are too few games of each length to tell yet.
When is Sylas strongest against Kassadin?
Sylas is measurably ahead in: First item.
What should Kassadin build against Sylas?
There are not enough games for a matchup-specific core, so use Kassadin's usual Mid core: Rod of Ages, Malignance, Mejai's Soulstealer. The biggest change against Sylas: Shadowflame (4.5% usually, 12.9% here).
What runes should Kassadin use against Sylas?
Use Kassadin's usual First Strike page (Inspiration + Domination); there are too few games for a matchup-specific page. The biggest change against Sylas: Health Scaling (defense) (87.3% usually, 96.8% here).