- Win Rate
- 47.6%
- Pick Rate
- 4.5%
- Ban Rate
- 9.2%
Jayce vs Jarvan IV
- Patch
- 26.22
- Games
- 8,897
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Nov 14, 2026 UTC
- Author
- Dakota Chinnick
- Methodology
- Data Methodology
Jayce vs Jarvan IV (Jungle): Jayce wins 45.5% of 143 ranked games over the last 2 patches (gold diff at 15: +346). Patch 26.22 build & runes.
Jayce45.5%
Current data slightly favors Jarvan IV, but the sample is too limited for a strong conclusion: Jayce wins 45.5% of 143 games (95% range 37.5–53.6%).
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 Jarvan IV?
Jayce wins 45.5% of these games. With this many games the true rate is most likely between 37.5% and 53.6% (95% range).
- Expected
- 46.1% From both champions' overall Jungle win rates
- Matchup effect
- −0.6 pts Observed minus expected
- Sample
- 143 games Lane: Jungle · Patch 26.21–26.22
- vs patch 26.21
- — Not enough games on both patches
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.21–26.22 · Oct 27 – Nov 14
The headline win rate covers patches 26.21–26.22 (143 games). The lane, game-length, build and rune sections below use patch 26.22 only (126 games).
They also met in another lane (Top): 3 games, Jayce won 33.3%.
Key takeaways
- Current data slightly favors Jarvan IV, but the sample is too limited for a strong conclusion: Jayce wins 45.5% of 143 games (95% range 37.5–53.6%).
- Both champions' overall Jungle win rates predict 46.1% for Jayce; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Jayce usually wins the lane: 346 gold ahead of Jarvan IV at 15 minutes on average (126 games with a 15-minute snapshot).
- Jayce players pick Scorchclaw Pup far more often against Jarvan IV: 13.2% of their other Jungle games, 22.2% 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 Jarvan IV 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 Jarvan IV Laning Stats
At 15 minutes
Whole-game averages
Jayce vs Jarvan IV Win Rate by Game Length
Jayce's win rate against Jarvan IV 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 Jarvan IV in short and long games are within the margin of error of each other.
Jayce vs Jarvan IV 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)JayceJayce gold at 15: +346
- First itemEvenJayce: 0.1 min · Jarvan IV: 0.1 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenJayce wins 47.3% of 55 games
- 30+ min gamesEvenJayce wins 50.0% of 50 games
What Jayce Changes Against Jarvan IV
Choices Jayce players make noticeably more or less often in this matchup than in their other Jungle games.
Scorchclaw PupStarting itemsUsually13.2%vs Jarvan IV22.2%+9.0 pts46.4% WR here
Best Jayce Build vs Jarvan IV
Usual Jayce build (Jungle)
56.0% win rate · 150 games
Against Jarvan IV
Not enough matchup-specific build data: only 9 of 79 Jayce games against Jarvan IV carried a complete build, which is too few to recommend an item path from. Use Jayce's standard build instead.
- Jayce usually completes Scorchclaw Pup first, at 0.1 min (median of 121 games).
- Jarvan IV usually completes Scorchclaw Pup first, at 0.1 min (median of 98 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 Jarvan IV
Usual Jayce runes (Jungle)
First Strike
54.3% win rate · 278 games
Against Jarvan IV
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 26.22. 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 Jarvan IV FAQ - Patch 26.21–26.22
Who wins Jayce vs Jarvan IV?
Current data slightly favors Jarvan IV, but the sample is too limited for a strong conclusion: Jayce wins 45.5% of 143 games (95% range 37.5–53.6%).
What is Jayce's win rate against Jarvan IV?
Jayce wins 45.5% of 143 Jungle games against Jarvan IV on patch 26.21–26.22 (95% range 37.5–53.6%). Based on both champions' overall Jungle win rates, 46.1% would be expected.
Does Jayce counter Jarvan IV?
Not clearly. Jayce wins 45.5% of 143 games against Jarvan IV, and the 95% range (37.5–53.6%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Jayce or Jarvan IV?
Jayce usually wins the lane: 346 gold ahead of Jarvan IV at 15 minutes on average (126 games with a 15-minute snapshot).
Does Jayce outscale Jarvan IV?
Not measurably: Jayce's win rate against Jarvan IV in games of 25 minutes or less and in longer games is within the margin of error of each other.
When is Jarvan IV strongest against Jayce?
On current data there is no stage of the game where Jarvan IV is ahead of Jayce beyond the margin of error.
What should Jayce build against Jarvan IV?
There are not enough games for a matchup-specific core, so use Jayce's usual Jungle core: Voltaic Cyclosword, Serpent's Fang, Edge of Night. The biggest change against Jarvan IV: Scorchclaw Pup (13.2% usually, 22.2% here).
What runes should Jayce use against Jarvan IV?
Use Jayce's usual First Strike page (Inspiration + Precision); there are too few games for a matchup-specific page.