Katarinavs Ahri
Katarina vs Ahri is a decisive matchup in LoL patch 26.19. Ahri wins with a 54.0% win rate (+8.0%) over Katarina based on 113 games. Ahri holds the advantage in both the early and late game. Below you'll find the best Katarina build, runes, laning stats, and strategies for the Katarina vs Ahri matchup.
Katarina Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Katarina 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 Katarina vs Ahri?
Katarina wins 50.4% of these games. With this many games the true rate is most likely between 44.0% and 56.9% (95% range).
- Expected
- 47.9% From both champions' overall Mid win rates
- Matchup effect
- +2.6 pts Observed minus expected
- Sample
- 228 games Lane: Mid
- vs patch 26.18
- +1.1 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
- Katarina vs Ahri is an even matchup: Katarina wins 50.4% of 228 games, and the 95% range (44.0–56.9%) comfortably includes 50%.
- Both champions' overall Mid win rates predict 47.9% for Katarina; 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 201, within the margin of error (224 games).
- Katarina players pick Mejai's Soulstealer far more often against Ahri: 8.5% of their other Mid games, 17.1% 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 Katarina and Ahri 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 Katarina'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.
Katarina vs Ahri Laning Stats
At 15 minutes
Whole-game averages
Katarina vs Ahri Win Rate by Game Length
Katarina's win rate against Ahri 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: Katarina's results against Ahri in short and long games are within the margin of error of each other.
Katarina vs Ahri 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)EvenKatarina gold at 15: +201
- First itemEvenKatarina: 11.4 min · Ahri: 11.0 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenKatarina wins 45.6% of 103 games
- 30+ min gamesEvenKatarina wins 55.1% of 107 games
What Katarina Changes Against Ahri
Choices Katarina players make noticeably more or less often in this matchup than in their other Mid games.
Usually8.5%vs Ahri17.1%+8.6 pts74.4% WR here
Usually28.9%vs Ahri35.5%+6.7 pts54.3% WR here
Sudden ImpactRuneUsually86.9%vs Ahri92.1%+5.2 pts51.9% WR here
Death's DanceItemUsually7.1%vs Ahri2.6%−4.5 pts
TriumphRuneUsually90.9%vs Ahri86.8%−4.0 pts51.0% WR here
Armored AdvanceBootsUsually7.5%vs Ahri3.9%−3.6 pts
Best Katarina Build vs Ahri
Usual Katarina build (Mid)
85.7% win rate · 49 games
Limited sample: 43 of 148 games finished this exact core, so treat it as an observation rather than a recommendation.
- Katarina usually completes Lich Bane first, at 11.4 min (median of 120 games).
- Ahri usually completes Malignance first, at 11.0 min (median of 123 games).
- Skill priority: Q > E > 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 Katarina Runes vs Ahri
Usual Katarina runes (Mid)
Electrocute
60.6% win rate · 71 games
Against Ahri
Electrocute
55.2% win rate · 67 games
Plan your Katarina 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
Katarina matchup data for League of Legends patch 26.19. The table below shows Katarina'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 Katarina build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Katarina Matchups
Hardest for Katarina
Easiest for Katarina
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.
Katarina vs Ahri FAQ - Patch 26.19
Who wins Katarina vs Ahri?
Katarina vs Ahri is an even matchup: Katarina wins 50.4% of 228 games, and the 95% range (44.0–56.9%) comfortably includes 50%.
What is Katarina's win rate against Ahri?
Katarina wins 50.4% of 228 Mid games against Ahri on patch 26.19 (95% range 44.0–56.9%). Based on both champions' overall Mid win rates, 47.9% would be expected.
Does Katarina counter Ahri?
Not clearly. Katarina wins 50.4% of 228 games against Ahri, and the 95% range (44.0–56.9%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Katarina or Ahri?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 201, within the margin of error (224 games).
Does Katarina outscale Ahri?
Not measurably: Katarina's win rate against Ahri in games of 25 minutes or less and in longer games is within the margin of error of each other.
When is Ahri strongest against Katarina?
On current data there is no stage of the game where Ahri is ahead of Katarina beyond the margin of error.
What should Katarina build against Ahri?
The most successful Katarina core against Ahri is Shadowflame, Zhonya's Hourglass, Lich Bane (62.8% over 43 games). The biggest change against Ahri: Mejai's Soulstealer (8.5% usually, 17.1% here).
What runes should Katarina use against Ahri?
Electrocute with Domination and Precision — 55.2% over 67 games against Ahri. The biggest change against Ahri: Sudden Impact (86.9% usually, 92.1% here).