Jaycevs Gnar
Jayce vs Gnar is a decisive matchup in LoL patch 26.19. Gnar wins with a 55.6% win rate (+11.1%) over Jayce based on 18 games. Jayce wins the early laning phase while Gnar scales better into the late game. Below you'll find the best Jayce build, runes, laning stats, and strategies for the Jayce vs Gnar 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 Gnar?
Jayce wins 39.5% of these games. With this many games the true rate is most likely between 26.4% and 54.4% (95% range).
- Expected
- 49.2% From both champions' overall Top win rates
- Matchup effect
- −9.6 pts Observed minus expected
- Sample
- 43 games Lane: Top
- vs patch 26.18
- — Not enough games on both patches
Lane: Top · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
Key takeaways
- Current data slightly favors Gnar, but the sample is too limited for a strong conclusion: Jayce wins 39.5% of 43 games (95% range 26.4–54.4%).
- Both champions' overall Top win rates predict 49.2% for Jayce; 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 99, within the margin of error (43 games).
- Jayce players pick Ionian Boots of Lucidity far more often against Gnar: 29.9% of their other Top games, 44.2% 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 Jayce and Gnar 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 Gnar Laning Stats
At 15 minutes
Whole-game averages
Jayce vs Gnar Win Rate by Game Length
Jayce's win rate against Gnar 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 Gnar in short and long games are within the margin of error of each other.
Jayce vs Gnar 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)EvenJayce gold at 15: −99
- First itemJayceJayce: 11.0 min · Gnar: 14.1 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Jayce Changes Against Gnar
Choices Jayce players make noticeably more or less often in this matchup than in their other Top games.
Usually29.9%vs Gnar44.2%+14.3 pts
Bone PlatingRuneUsually12.4%vs Gnarunder 2%−12.4 pts
ScorchRuneUsually10.0%vs Gnarunder 2%−10.0 pts
Attack Speed (offense)Stat shardUsually4.4%vs Gnar11.6%+7.2 pts
Best Jayce Build vs Gnar
Usual Jayce build (Top)
75.0% win rate · 32 games
Against Gnar
Not enough matchup-specific build data: only 5 of 29 Jayce games against Gnar carried a complete build, which is too few to recommend an item path from. Use Jayce's standard build instead.
- Jayce usually completes Youmuu's Ghostblade first, at 11.0 min (median of 25 games).
- Gnar usually completes Trinity Force first, at 14.1 min (median of 36 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 Jayce Runes vs Gnar
Usual Jayce runes (Top)
Stormraider's Surge
46.4% win rate · 496 games
Against Gnar
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 Gnar FAQ - Patch 26.19
Who wins Jayce vs Gnar?
Current data slightly favors Gnar, but the sample is too limited for a strong conclusion: Jayce wins 39.5% of 43 games (95% range 26.4–54.4%).
What is Jayce's win rate against Gnar?
Jayce wins 39.5% of 43 Top games against Gnar on patch 26.19 (95% range 26.4–54.4%). Based on both champions' overall Top win rates, 49.2% would be expected.
Does Jayce counter Gnar?
Not clearly. Jayce wins 39.5% of 43 games against Gnar, and the 95% range (26.4–54.4%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Jayce or Gnar?
Neither side reliably wins the lane: the average gold difference at 15 minutes is 99, within the margin of error (43 games).
Does Jayce outscale Gnar?
There are too few games of each length to tell yet.
When is Gnar strongest against Jayce?
On current data there is no stage of the game where Gnar is ahead of Jayce beyond the margin of error.
What should Jayce build against Gnar?
There are not enough games for a matchup-specific core, so use Jayce's usual Top core: Voltaic Cyclosword, Serylda's Grudge, Edge of Night. The biggest change against Gnar: Ionian Boots of Lucidity (29.9% usually, 44.2% here).
What runes should Jayce use against Gnar?
Use Jayce's usual Stormraider's Surge page (Sorcery + Inspiration); there are too few games for a matchup-specific page. The biggest change against Gnar: Bone Plating (12.4% usually, under 2% here).