- Win Rate
- 49.1%
- Pick Rate
- 1.9%
- Ban Rate
- 0.7%
Jarvan IV vs Mordekaiser
- Patch
- 26.19
- Games
- 1,699
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 5, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Jarvan IV vs Mordekaiser is a decisive matchup in LoL patch 26.19. Jarvan IV wins with a 53.9% win rate (+7.7%) over Mordekaiser based on 13 games. Jarvan IV holds the advantage in both the early and late game. Below you'll find the best Jarvan IV build, runes, laning stats, and strategies for the Jarvan IV vs Mordekaiser matchup.
Jarvan IV Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Jarvan IV 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 Jarvan IV vs Mordekaiser?
Jarvan IV wins 60.0% of these games. With this many games the true rate is most likely between 31.3% and 83.2% (95% range).
- Expected
- 46.3% From both champions' overall Jungle win rates
- Matchup effect
- +13.7 pts Observed minus expected
- Sample
- 10 games Lane: Jungle
- vs patch 26.18
- — Not enough games on both patches
Lane: Jungle · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
Key takeaways
- Only 10 Jarvan IV vs Mordekaiser games were recorded in the Jungle 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 Jarvan IV and Mordekaiser 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 Jarvan IV'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.
Jarvan IV vs Mordekaiser Laning Stats
Only 10 games have a 15-minute snapshot so far — the lane-phase numbers appear from 30.
Whole-game averages
Jarvan IV vs Mordekaiser Win Rate by Game Length
Jarvan IV's win rate against Mordekaiser 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: Jarvan IV's results against Mordekaiser in short and long games are within the margin of error of each other.
Jarvan IV vs Mordekaiser 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 Jarvan IV Changes Against Mordekaiser
Only 10 games so far — too few to compare what Jarvan IV players do in this matchup with their usual choices (needs 20).
Best Jarvan IV Build vs Mordekaiser
Usual Jarvan IV build (Jungle)
70.3% win rate · 74 games
Against Mordekaiser
Not enough matchup-specific build data: only 0 of 10 Jarvan IV games against Mordekaiser carried a complete build, which is too few to recommend an item path from. Use Jarvan IV'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 Jarvan IV Runes vs Mordekaiser
Usual Jarvan IV runes (Jungle)
Conqueror
54.3% win rate · 361 games
Against Mordekaiser
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Jarvan IV 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
Jarvan IV matchup data for League of Legends patch 26.19. The table below shows Jarvan IV'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 Jarvan IV build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Jarvan IV Matchups
Hardest for Jarvan IV
Easiest for Jarvan IV
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.
Jarvan IV vs Mordekaiser FAQ - Patch 26.19
Who wins Jarvan IV vs Mordekaiser?
Only 10 Jarvan IV vs Mordekaiser games were recorded in the Jungle role on patch 26.19 — too few to say who is favored. Treat the numbers below as provisional.
What is Jarvan IV's win rate against Mordekaiser?
Jarvan IV wins 60.0% of 10 Jungle games against Mordekaiser on patch 26.19 (95% range 31.3–83.2%). Based on both champions' overall Jungle win rates, 46.3% would be expected.
Does Jarvan IV counter Mordekaiser?
There are only 10 Jarvan IV vs Mordekaiser games in this lane on patch 26.19 — too few to answer reliably yet.
Who wins lane, Jarvan IV or Mordekaiser?
There are not enough games with a 15-minute snapshot yet (10) to say who wins lane.
Does Jarvan IV outscale Mordekaiser?
There are too few games of each length to tell yet.
When is Mordekaiser strongest against Jarvan IV?
On current data there is no stage of the game where Mordekaiser is ahead of Jarvan IV beyond the margin of error.
What should Jarvan IV build against Mordekaiser?
There are not enough games for a matchup-specific core, so use Jarvan IV's usual Jungle core: Voltaic Cyclosword, Profane Hydra, Axiom Arc.
What runes should Jarvan IV use against Mordekaiser?
Use Jarvan IV's usual Conqueror page (Precision + Inspiration); there are too few games for a matchup-specific page.