- Win Rate
- 48.9%
- Pick Rate
- 1.0%
- Ban Rate
- 0.5%
Karthus vs Briar
- Patch
- 26.19
- Games
- 937
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 4, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Karthus vs Briar is a decisive matchup in LoL patch 26.19. Briar wins with a 75.0% win rate (+50.0%) over Karthus based on 16 games. Briar holds the advantage in both the early and late game. Below you'll find the best Karthus build, runes, laning stats, and strategies for the Karthus vs Briar matchup.
Karthus Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Karthus 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 Karthus vs Briar?
Karthus wins 36.6% of these games. With this many games the true rate is most likely between 23.6% and 51.9% (95% range).
- Expected
- 46.9% From both champions' overall Jungle win rates
- Matchup effect
- −10.3 pts Observed minus expected
- Sample
- 41 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
- Current data slightly favors Briar, but the sample is too limited for a strong conclusion: Karthus wins 36.6% of 41 games (95% range 23.6–51.9%).
- Both champions' overall Jungle win rates predict 46.9% for Karthus; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Briar usually wins the lane: 565 gold ahead of Karthus at 15 minutes on average (40 games with a 15-minute snapshot).
- Karthus players pick Flash + Smite much less often against Briar: 37.4% of their other Jungle games, 22.0% 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 Karthus and Briar 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 Karthus'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.
Karthus vs Briar Laning Stats
At 15 minutes
Whole-game averages
Karthus vs Briar Win Rate by Game Length
Karthus's win rate against Briar 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: Karthus's results against Briar in short and long games are within the margin of error of each other.
Karthus vs Briar 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)BriarKarthus gold at 15: −565
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Karthus Changes Against Briar
Choices Karthus players make noticeably more or less often in this matchup than in their other Jungle games.
Flash + SmiteSummoner spellsUsually37.4%vs Briar22.0%−15.5 pts
Gustwalker HatchlingStarting itemsUsually4.4%vs Briar12.2%+7.8 pts
Seraph's EmbraceItemUsually0.5%vs Briar7.3%+6.8 pts
Usually1.6%vs Briar7.3%+5.7 pts
Best Karthus Build vs Briar
Usual Karthus build (Jungle)
71.1% win rate · 38 games
Against Briar
Not enough matchup-specific build data: only 3 of 27 Karthus games against Briar carried a complete build, which is too few to recommend an item path from. Use Karthus's standard build instead.
- Karthus usually completes Scorchclaw Pup first, at 0.2 min (median of 28 games).
- Skill priority: Q > E > W — 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 Karthus Runes vs Briar
Usual Karthus runes (Jungle)
Deathfire Touch
57.0% win rate · 79 games
Against Briar
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Karthus 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
Karthus matchup data for League of Legends patch 26.19. The table below shows Karthus'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 Karthus build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Karthus Matchups
Hardest for Karthus
Easiest for Karthus
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.
Karthus vs Briar FAQ - Patch 26.19
Who wins Karthus vs Briar?
Current data slightly favors Briar, but the sample is too limited for a strong conclusion: Karthus wins 36.6% of 41 games (95% range 23.6–51.9%).
What is Karthus's win rate against Briar?
Karthus wins 36.6% of 41 Jungle games against Briar on patch 26.19 (95% range 23.6–51.9%). Based on both champions' overall Jungle win rates, 46.9% would be expected.
Does Karthus counter Briar?
Not clearly. Karthus wins 36.6% of 41 games against Briar, and the 95% range (23.6–51.9%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Karthus or Briar?
Briar usually wins the lane: 565 gold ahead of Karthus at 15 minutes on average (40 games with a 15-minute snapshot).
Does Karthus outscale Briar?
There are too few games of each length to tell yet.
When is Briar strongest against Karthus?
Briar is measurably ahead in: Lane (15 min).
What should Karthus build against Briar?
There are not enough games for a matchup-specific core, so use Karthus's usual Jungle core: Liandry's Torment, Stormsurge, Shadowflame. The biggest change against Briar: Gustwalker Hatchling (4.4% usually, 12.2% here).
What runes should Karthus use against Briar?
Use Karthus's usual Deathfire Touch page (Sorcery + Precision); there are too few games for a matchup-specific page. The biggest change against Briar: Flash + Smite (37.4% usually, 22.0% here).