Kassadinvs LeBlanc
Kassadin vs LeBlanc is a decisive matchup in LoL patch 26.19. LeBlanc wins with a 53.9% win rate (+7.7%) over Kassadin based on 26 games. LeBlanc wins the early laning phase while Kassadin scales better into the late game. Below you'll find the best Kassadin build, runes, laning stats, and strategies for the Kassadin vs LeBlanc 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 LeBlanc?
Kassadin wins 46.2% of these games. With this many games the true rate is most likely between 33.3% and 59.5% (95% range).
- Expected
- 49.7% From both champions' overall Mid win rates
- Matchup effect
- −3.6 pts Observed minus expected
- Sample
- 52 games Lane: Mid
- vs patch 26.18
- −15.7 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 LeBlanc, but the sample is too limited for a strong conclusion: Kassadin wins 46.2% of 52 games (95% range 33.3–59.5%).
- Both champions' overall Mid win rates predict 49.7% 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 274, within the margin of error (52 games).
- Kassadin players pick the Q > E > W skill order far more often against LeBlanc: 14.8% of their other Mid games, 34.6% 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 Kassadin and LeBlanc 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 LeBlanc Laning Stats
At 15 minutes
Whole-game averages
Kassadin vs LeBlanc Win Rate by Game Length
Kassadin's win rate against LeBlanc 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 LeBlanc in short and long games are within the margin of error of each other.
Kassadin vs LeBlanc 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: −274
- First itemLeBlancKassadin: 11.9 min · LeBlanc: 10.8 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Kassadin Changes Against LeBlanc
Choices Kassadin players make noticeably more or less often in this matchup than in their other Mid games.
- Q > E > Wthe Q > E > W skill orderSkill priorityUsually14.8%vs LeBlanc34.6%+19.8 pts
Dark Seal + Refillable PotionStarting itemsUsually27.9%vs LeBlanc9.6%−18.3 pts
Health (defense)Stat shardUsually8.8%vs LeBlanc17.3%+8.6 pts
Attack Speed (offense)Stat shardUsually1.9%vs LeBlanc7.7%+5.8 pts
Fleet FootworkKeystoneUsually2.3%vs LeBlanc7.7%+5.4 pts
Doran's Helm + Health Potion + Stealth WardStarting itemsUsually1.6%vs LeBlanc5.8%+4.2 pts
Health Potion + Health Potion + Tear of the Goddess + Stealth Ward + Stealth WardStarting itemsUsuallyunder 0.5%vs LeBlanc3.8%+3.8 pts
Best Kassadin Build vs LeBlanc
Usual Kassadin build (Mid)
93.0% win rate · 43 games
Against LeBlanc
Not enough matchup-specific build data: only 9 of 37 Kassadin games against LeBlanc 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 11.9 min (median of 38 games).
- LeBlanc usually completes Luden's Echo first, at 10.8 min (median of 42 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 LeBlanc
Usual Kassadin runes (Mid)
First Strike
68.0% win rate · 25 games
Against LeBlanc
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 LeBlanc FAQ - Patch 26.19
Who wins Kassadin vs LeBlanc?
Current data slightly favors LeBlanc, but the sample is too limited for a strong conclusion: Kassadin wins 46.2% of 52 games (95% range 33.3–59.5%).
What is Kassadin's win rate against LeBlanc?
Kassadin wins 46.2% of 52 Mid games against LeBlanc on patch 26.19 (95% range 33.3–59.5%). Based on both champions' overall Mid win rates, 49.7% would be expected.
Does Kassadin counter LeBlanc?
Not clearly. Kassadin wins 46.2% of 52 games against LeBlanc, and the 95% range (33.3–59.5%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Kassadin or LeBlanc?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 274, within the margin of error (52 games).
Does Kassadin outscale LeBlanc?
There are too few games of each length to tell yet.
When is LeBlanc strongest against Kassadin?
LeBlanc is measurably ahead in: First item.
What should Kassadin build against LeBlanc?
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 LeBlanc: Dark Seal + Refillable Potion (27.9% usually, 9.6% here).
What runes should Kassadin use against LeBlanc?
Use Kassadin's usual First Strike page (Inspiration + Domination); there are too few games for a matchup-specific page. The biggest change against LeBlanc: Health (defense) (8.8% usually, 17.3% here).