Vexvs Katarina
Vex vs Katarina is a decisive matchup in LoL patch 26.18. Katarina wins with a 55.4% win rate (+10.7%) over Vex based on 56 games. Vex wins the early laning phase while Katarina scales better into the late game. Below you'll find the best Vex build, runes, laning stats, and strategies for the Vex vs Katarina matchup.
Vex Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Vex 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 Vex vs Katarina?
Vex wins 45.5% of these games. With this many games the true rate is most likely between 33.0% and 58.5% (95% range).
- Expected
- 53.1% From both champions' overall Mid win rates
- Matchup effect
- −7.6 pts Observed minus expected
- Sample
- 55 games Lane: Mid
Lane: Mid · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.18 · Sep 11 – Sep 14
Key takeaways
- Current data slightly favors Katarina, but the sample is too limited for a strong conclusion: Vex wins 45.5% of 55 games (95% range 33.0–58.5%).
- Both champions' overall Mid win rates predict 53.1% for Vex; 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 306, within the margin of error (55 games).
- Vex players pick Manaflow Band far more often against Katarina: 82.1% of their other Mid games, 92.7% 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 Vex and Katarina 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 Vex'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.
Vex vs Katarina Laning Stats
At 15 minutes
Solo kills are tracked from this patch on — 0 games have them so far, shown from 30.
Whole-game averages
Vex vs Katarina Win Rate by Game Length
Vex's win rate against Katarina 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: Vex's results against Katarina in short and long games are within the margin of error of each other.
Vex vs Katarina 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)EvenVex gold at 15: −306
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Vex Changes Against Katarina
Choices Vex players make noticeably more or less often in this matchup than in their other Mid games.
Manaflow BandRuneUsually82.1%vs Katarina92.7%+10.7 pts45.1% WR here
SorcerySecondary treeUsually86.4%vs Katarina96.4%+10.0 pts45.3% WR here
Best Vex Build vs Katarina
Against Katarina
Not enough matchup-specific build data: only 13 of 32 Vex games against Katarina carried a complete build, which is too few to recommend an item path from. Use Vex's standard build instead.
- Vex usually completes Luden's Echo first, at 11.3 min (median of 49 games).
- Skill priority: Q > W > E — 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 Vex Runes vs Katarina
Usual Vex runes (Mid)
Electrocute
55.2% win rate · 1,003 games
Against Katarina
Electrocute41.7% win rate · 36 games
Vex matchup data for League of Legends patch 26.18. The table below shows Vex'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 Vex build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Vex Matchups
Hardest for Vex
Easiest for Vex
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.
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Vex vs Katarina FAQ - Patch 26.18
Who wins Vex vs Katarina?
Current data slightly favors Katarina, but the sample is too limited for a strong conclusion: Vex wins 45.5% of 55 games (95% range 33.0–58.5%).
What is Vex's win rate against Katarina?
Vex wins 45.5% of 55 Mid games against Katarina on patch 26.18 (95% range 33.0–58.5%). Based on both champions' overall Mid win rates, 53.1% would be expected.
Does Vex counter Katarina?
Not clearly. Vex wins 45.5% of 55 games against Katarina, and the 95% range (33.0–58.5%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Vex or Katarina?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 306, within the margin of error (55 games).
Does Vex outscale Katarina?
There are too few games of each length to tell yet.
When is Katarina strongest against Vex?
On current data there is no stage of the game where Katarina is ahead of Vex beyond the margin of error.
What should Vex build against Katarina?
There are not enough games for a matchup-specific core, so use Vex's usual Mid core: Luden's Echo, Shadowflame, Void Staff.
What runes should Vex use against Katarina?
Electrocute with Domination and Sorcery — 41.7% over 36 games against Katarina. The biggest change against Katarina: Manaflow Band (82.1% usually, 92.7% here).