- Win Rate
- 50.7%
- Pick Rate
- 4.4%
- Ban Rate
- 15.3%
Mordekaiser vs Jarvan IV
- Patch
- 26.19
- Games
- 4,003
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 5, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Mordekaiser vs Jarvan IV 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. Mordekaiser wins the early laning phase while Jarvan IV scales better into the late game. Below you'll find the best Mordekaiser build, runes, laning stats, and strategies for the Mordekaiser vs Jarvan IV matchup.
Mordekaiser Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Mordekaiser 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 Mordekaiser vs Jarvan IV?
Mordekaiser wins 40.0% of these games. With this many games the true rate is most likely between 16.8% and 68.7% (95% range).
- Expected
- 53.7% 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 Mordekaiser vs Jarvan IV 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 Mordekaiser 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 Mordekaiser'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.
Mordekaiser vs Jarvan IV Laning Stats
Only 10 games have a 15-minute snapshot so far — the lane-phase numbers appear from 30.
Whole-game averages
Mordekaiser vs Jarvan IV Win Rate by Game Length
Mordekaiser'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: Mordekaiser's results against Jarvan IV in short and long games are within the margin of error of each other.
Mordekaiser 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)Insufficient data
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Mordekaiser Changes Against Jarvan IV
Only 10 games so far — too few to compare what Mordekaiser players do in this matchup with their usual choices (needs 20).
Best Mordekaiser Build vs Jarvan IV
Usual Mordekaiser build (Jungle)
66.7% win rate · 60 games
Against Jarvan IV
Not enough matchup-specific build data: only 0 of 10 Mordekaiser games against Jarvan IV carried a complete build, which is too few to recommend an item path from. Use Mordekaiser'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 Mordekaiser Runes vs Jarvan IV
Usual Mordekaiser runes (Jungle)
Conqueror
56.0% win rate · 218 games
Against Jarvan IV
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Mordekaiser 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
Mordekaiser matchup data for League of Legends patch 26.19. The table below shows Mordekaiser'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 Mordekaiser build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Mordekaiser Matchups
Hardest for Mordekaiser
Easiest for Mordekaiser
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.
Mordekaiser vs Jarvan IV FAQ - Patch 26.19
Who wins Mordekaiser vs Jarvan IV?
Only 10 Mordekaiser vs Jarvan IV 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 Mordekaiser's win rate against Jarvan IV?
Mordekaiser wins 40.0% of 10 Jungle games against Jarvan IV on patch 26.19 (95% range 16.8–68.7%). Based on both champions' overall Jungle win rates, 53.7% would be expected.
Does Mordekaiser counter Jarvan IV?
There are only 10 Mordekaiser vs Jarvan IV games in this lane on patch 26.19 — too few to answer reliably yet.
Who wins lane, Mordekaiser or Jarvan IV?
There are not enough games with a 15-minute snapshot yet (10) to say who wins lane.
Does Mordekaiser outscale Jarvan IV?
There are too few games of each length to tell yet.
When is Jarvan IV strongest against Mordekaiser?
On current data there is no stage of the game where Jarvan IV is ahead of Mordekaiser beyond the margin of error.
What should Mordekaiser build against Jarvan IV?
There are not enough games for a matchup-specific core, so use Mordekaiser's usual Jungle core: Liandry's Torment, Riftmaker, Rylai's Crystal Scepter.
What runes should Mordekaiser use against Jarvan IV?
Use Mordekaiser's usual Conqueror page (Precision + Resolve); there are too few games for a matchup-specific page.