Jaycevs Katarina
Jayce vs Katarina is a decisive matchup in LoL patch 26.19. Jayce wins with a 60.0% win rate (+20.0%) over Katarina based on 10 games. Jayce holds the advantage in both the early and late game. Below you'll find the best Jayce build, runes, laning stats, and strategies for the Jayce vs Katarina matchup.
Jayce Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Jayce 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 Jayce vs Katarina?
Jayce wins 35.7% of these games. With this many games the true rate is most likely between 16.3% and 61.2% (95% range).
- Expected
- 51.5% From both champions' overall Mid win rates
- Matchup effect
- −15.8 pts Observed minus expected
- Sample
- 14 games Lane: Mid
- vs patch 26.18
- — Not enough games on both patches
Lane: Mid · Ranked Solo/Duo · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
Key takeaways
- Only 14 Jayce vs Katarina games were recorded in the Mid role on patch 26.19 — too few to say who is favored. Treat the numbers below as provisional.
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 Jayce 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 Jayce'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.
Jayce vs Katarina Laning Stats
Only 13 games have a 15-minute snapshot so far — the lane-phase numbers appear from 30.
Whole-game averages
Jayce vs Katarina Win Rate by Game Length
Jayce'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: Jayce's results against Katarina in short and long games are within the margin of error of each other.
Jayce 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)Insufficient data
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Jayce Changes Against Katarina
Only 14 games so far — too few to compare what Jayce players do in this matchup with their usual choices (needs 20).
Best Jayce Build vs Katarina
Usual Jayce build (Mid)
76.2% win rate · 21 games
Against Katarina
Not enough matchup-specific build data: only 0 of 14 Jayce games against Katarina carried a complete build, which is too few to recommend an item path from. Use Jayce's standard build instead.
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 Jayce Runes vs Katarina
Usual Jayce runes (Mid)
First Strike
64.8% win rate · 54 games
Against Katarina
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Jayce 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
Jayce matchup data for League of Legends patch 26.19. The table below shows Jayce'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 Jayce build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Jayce Matchups
Hardest for Jayce
Easiest for Jayce
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.
Jayce vs Katarina FAQ - Patch 26.19
Who wins Jayce vs Katarina?
Only 14 Jayce vs Katarina games were recorded in the Mid role on patch 26.19 — too few to say who is favored. Treat the numbers below as provisional.
What is Jayce's win rate against Katarina?
Jayce wins 35.7% of 14 Mid games against Katarina on patch 26.19 (95% range 16.3–61.2%). Based on both champions' overall Mid win rates, 51.5% would be expected.
Does Jayce counter Katarina?
There are only 14 Jayce vs Katarina games in this lane on patch 26.19 — too few to answer reliably yet.
Who wins lane, Jayce or Katarina?
There are not enough games with a 15-minute snapshot yet (13) to say who wins lane.
Does Jayce outscale Katarina?
There are too few games of each length to tell yet.
When is Katarina strongest against Jayce?
On current data there is no stage of the game where Katarina is ahead of Jayce beyond the margin of error.
What should Jayce build against Katarina?
There are not enough games for a matchup-specific core, so use Jayce's usual Mid core: Voltaic Cyclosword, Serylda's Grudge, Youmuu's Ghostblade.
What runes should Jayce use against Katarina?
Use Jayce's usual First Strike page (Inspiration + Domination); there are too few games for a matchup-specific page.