Karthus - League of Legends Champion
Win Rate
49.3%
Pick Rate
1.3%

Karthusvs Jayce

DMage
Patch26.7
Matches949,984
LaneAll Lanes
TierAll Tiers
Last UpdatedApr 19, 2026
MethodologyData Methodology

Karthus vs Jayce is a decisive matchup in LoL patch 26.7. Karthus wins with a 60.0% win rate (+20.0%) over Jayce based on 5 games. Karthus 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 Jayce 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.

Compare against an opponent
Jayce - 60.0% win rateJayce(60.0%)
Karthus - 60.0% win rate in this matchup
Karthus
60.0% WR
VS
Jayce vs Karthus matchup - 40.0% win rate
Jayce
40.0% WR

Who Wins the Karthus vs Jayce Matchup?

Karthus wins the Karthus vs Jayce matchup
Winner
Karthus
Matches: 5
60.0%
Win Rate
40.0%
2.3
CS / min
3.0
822
DMG / min
563
13,484
Gold / game
11,753
327
Heal / min
240
358
DMG Mitigated / min
393
0.5
CC / min
0.4
66.7%
Early Game WR
33.3%
50.0%
Late Game WR
50.0%

Karthus vs Jayce Matchup Summary

The Karthus vs Jayce matchup is a decisive matchup in League of Legends ranked play. Based on 5 recent matches analyzed, Karthus wins with a 60.0% win rate compared to Jayce's 40.0%, giving Karthus a 20.0 percentage point advantage. Karthus dominates at every stage — from early laning through late game team fights. This consistent advantage makes it difficult for Jayce players to find favorable windows, so team-dependent strategies and avoiding solo confrontations are essential. The most significant statistical gap is in damage output, where Karthus leads by 259 DMG/min — a difference that heavily influences the outcome of trades and skirmishes. Karthus players can confidently pick into Jayce and play aggressively from level 1. Look to establish lane dominance early through favorable trades and zone Jayce away from CS whenever possible. Understanding these matchup dynamics is essential for champion select decisions and in-game strategy when facing this lane opponent.

Karthus vs Jayce Laning Phase Breakdown

Karthus wins the laning phase against Jayce in League of Legends

Karthus is favored during the laning phase against Jayce, winning 4 out of 5 key stat categories. Karthus holds advantages in damage, gold income, crowd control and sustain, making them the stronger laner in this matchup.

Farming
2.3Karthus
3.0Jayce
Jayce edges out Karthus by 0.8 CS per minute — a moderate farming advantage that adds up to roughly 12 CS over a 15-minute laning phase. This translates to earlier component purchases and slightly faster power spikes for Jayce.
Damage
822Karthus
563Jayce
Karthus heavily out-damages Jayce by 259 DMG/min, dominating both short trades and all-in fights. Jayce should avoid extended combat and instead focus on burst trade patterns — short engages followed by immediate disengagement — to avoid letting Karthus's sustained damage advantage take over.
Economy
13,484Karthus
11,753Jayce
Karthus generates a commanding 1,731 more gold per game than Jayce. This substantial economic advantage means Karthus consistently reaches key item breakpoints earlier, creating a compounding lead that grows throughout the game. Jayce should focus on cost-effective item choices and avoid unnecessary deaths to prevent falling further behind.
Utility
0.5Karthus
0.4Jayce
Both Karthus and Jayce provide similar amounts of crowd control (0.1s/min difference), meaning neither has a significant advantage in locking down opponents for ganks or team fights. Lane ganks are equally effective for both sides.
Sustain
685Karthus
633Jayce
Karthus heals and mitigates 52 more damage per minute than Jayce, providing moderate extra durability. This sustain edge allows Karthus to stay in lane longer between recalls and gradually win extended wars of attrition. Consider building early grievous wounds if playing Jayce.

Best Karthus Build Against Jayce

Sorcerer's Shoes is the optimal boots choice against Jayce, providing the mobility and stats Karthus needs most in this matchup. The top-performing core items for Karthus against Jayce are Liandry's Torment, Shadowflame and Malignance. This combination gives Karthus an effective balance of damage, survivability, and utility for the matchup. Adjustments may be needed based on team compositions and game state, but this build provides the strongest foundation for the Karthus vs Jayce matchup.

Early Game vs Late Game

Early Game
Karthus
66.7%
+33.3% advantage
Karthus early game win rateKarthus66.7%
Jayce early game win rateJayce33.3%
Late Game
Karthus
50.0%
+0.0% advantage
Karthus late game win rateKarthus50.0%
Jayce late game win rateJayce50.0%

Karthus dominates the early game (first 15 minutes) with a commanding 66.7% win rate — a 33.3 percentage point lead over Jayce. This lopsided early game means Karthus can dictate the pace of the lane from level 1, controlling trades, wave state, and river priority.

Late game (25+ minutes) is equally balanced, with Karthus at 50.0% win rate — only 0.0 points ahead of Jayce. Team fight execution and macro play determine the winner at this stage, not champion matchup advantage.

Karthus holds the advantage at every stage of the game, making this a consistently favorable matchup from lane through late game team fights. Jayce players should look for outplays, team-dependent strategies, and picks rather than relying on scaling to win this matchup.

Best Karthus Runes Against Jayce

Domination rune tree - Karthus primary runes vs JayceDomination
Dark Harvest - best Karthus rune vs JayceCheap Shot - best Karthus rune vs JayceGrisly Mementos - best Karthus rune vs JayceUltimate Hunter - best Karthus rune vs Jayce
Precision rune tree - Karthus secondary runes vs JaycePrecision
Last Stand - best Karthus rune vs JaycePresence of Mind - best Karthus rune vs Jayce
100.0% WR

Running Domination primary with Precision secondary allows Karthus to press their advantage against Jayce, amplifying the strengths that make this a favorable matchup.


Karthus matchup data for League of Legends patch 26.7. 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.

Karthus matchup win rates and stats in League of Legends patch 26.7
Opponent
Win Rate
Matches
CS/min
DMG/min
Gold/game
Early WR
Late WR
48.78%411.51,24613,63464.7%37.5%
45.00%401.71,19914,67650.0%41.7%
37.84%371.81,20313,45342.9%34.8%
59.46%376.81,20414,13361.1%57.9%
58.33%361.41,18514,86346.1%65.2%
42.86%351.61,14713,92340.0%45.0%
44.12%341.41,12214,48658.3%36.4%
65.63%326.31,26613,64771.4%61.1%
50.00%281.61,25415,99971.4%42.9%
44.44%276.11,21913,94641.7%46.7%
59.26%276.01,24814,69160.0%58.8%
60.00%251.51,20814,13545.5%71.4%
63.64%222.01,41215,52085.7%53.3%
63.64%226.01,33115,66162.5%64.3%
57.89%191.21,11113,72737.5%72.7%
36.84%196.51,28014,54516.7%46.1%
42.11%191.51,29515,86340.0%42.9%
57.89%191.41,15014,33071.4%50.0%
47.06%176.41,29415,52850.0%46.1%
76.47%171.21,06613,39466.7%87.5%
47.06%171.81,19814,51350.0%46.1%
75.00%161.41,29814,71466.7%80.0%
56.25%161.51,14013,02250.0%62.5%
26.67%151.31,03412,14627.3%25.0%
33.33%152.11,14213,21320.0%40.0%
35.71%141.11,12013,85225.0%50.0%
38.46%131.21,08313,38916.7%57.1%
38.46%131.41,18614,42740.0%37.5%
23.08%132.21,01010,85522.2%25.0%
46.15%136.01,24613,80450.0%44.4%
53.85%137.11,16413,19242.9%66.7%
50.00%123.71,31914,92180.0%28.6%
50.00%121.21,22814,55325.0%62.5%
25.00%126.51,36414,04133.3%16.7%
83.33%121.41,23815,11766.7%88.9%
25.00%121.61,12615,19325.0%25.0%
66.67%127.31,53918,810100.0%60.0%
25.00%121.21,07613,8870.0%60.0%
50.00%121.31,03811,95450.0%50.0%
63.64%116.81,40515,26060.0%66.7%
63.64%112.91,09213,99266.7%62.5%
27.27%111.31,12512,25020.0%33.3%
18.18%111.51,18312,73025.0%14.3%
45.45%116.71,23014,91440.0%50.0%
70.00%105.91,26912,68760.0%80.0%
60.00%107.01,16813,68960.0%60.0%
60.00%101.41,38813,38660.0%60.0%
70.00%107.11,33314,53075.0%66.7%
33.33%97.31,21213,57820.0%50.0%
44.44%93.899013,717100.0%28.6%
22.22%96.81,08812,89120.0%25.0%
66.67%91.61,56915,98675.0%60.0%
66.67%91.81,22714,33780.0%50.0%
33.33%94.81,07213,64425.0%40.0%
50.00%86.71,22114,59460.0%33.3%
37.50%81.81,33816,668100.0%28.6%
42.86%72.11,10612,56733.3%50.0%
42.86%72.21,17211,38060.0%0.0%
42.86%72.01,37413,47750.0%33.3%
42.86%77.21,12512,97033.3%50.0%
71.43%75.71,05413,5520.0%100.0%
71.43%71.21,49615,8850.0%83.3%
14.29%72.91,23213,7160.0%33.3%
57.14%72.01,19112,95466.7%50.0%
42.86%72.11,19315,03550.0%40.0%
85.71%71.61,34617,646100.0%80.0%
57.14%72.81,23515,411100.0%40.0%
50.00%66.91,27912,34425.0%100.0%
66.67%61.31,38414,20166.7%66.7%
66.67%61.396311,486100.0%50.0%
33.33%65.41,55214,5320.0%33.3%
33.33%62.481311,29650.0%0.0%
66.67%64.01,15114,6630.0%80.0%
16.67%61.41,19215,1100.0%20.0%
50.00%61.61,26817,2400.0%60.0%
60.00%55.91,19113,24966.7%50.0%
40.00%51.61,10312,8790.0%66.7%
40.00%56.81,00311,9160.0%50.0%
60.00%55.11,47719,353100.0%50.0%
20.00%52.81,10312,98150.0%0.0%
60.00%53.17289,38375.0%0.0%
60.00%57.11,03414,8450.0%75.0%
20.00%58.21,15513,53650.0%0.0%
60.00%52.382213,48466.7%50.0%

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Karthus vs Jayce - Frequently Asked Questions

How does Karthus do against Jayce in League of Legends?

Karthus wins the Karthus vs Jayce matchup with a 60.0% win rate compared to Jayce's 40.0%, a 20.0 percentage point difference. This data is based on 5 recent ranked games in patch 26.7.

How does Karthus do against Jayce in the early game?

In the early game, Karthus has the advantage against Jayce with a 66.7% win rate versus 33.3%. Karthus players should look to press their lane advantage through aggressive trades and wave control during the first 15 minutes.

How does Karthus do against Jayce in the late game?

In the late game, Karthus takes over the Karthus vs Jayce matchup with a 50.0% win rate compared to 50.0%. Karthus scales better into team fights and objective contests after 25 minutes.

Who wins the Karthus vs Jayce matchup?

Karthus wins the matchup against Jayce with a 60.0% win rate in League of Legends patch 26.7. The 20.0 percentage point advantage means Karthus is significantly favored in this lane matchup based on 5 games analyzed.

What is the best Karthus build against Jayce?

The best Karthus build against Jayce includes Liandry's Torment, Shadowflame, Malignance with Sorcerer's Shoes. Check the matchup breakdown above for the full item path and build order.

What are the best Karthus runes against Jayce?

The best Karthus runes against Jayce use the Domination primary tree with Precision secondary. This rune setup achieves a 100.0% win rate in the Karthus vs Jayce matchup. See the full rune breakdown in the matchup comparison above.

Does Karthus counter Jayce?

Yes, Karthus has a favorable matchup against Jayce with a 60.0% win rate. Karthus strongly counters Jayce in lane based on current patch 26.7 data.

How do I play Karthus against Jayce?

When playing Karthus against Jayce, leverage your statistical advantages by trading aggressively during favorable windows. You have early game priority — look for kills and zone control before first recall. Build the recommended items and runes for this specific matchup for the best results.