Karthus - League of Legends Champion
Win Rate
47.8%
Pick Rate
1.0%

Karthusvs Fizz

FMage
Patch26.4
Matches1,089,240
LaneAll Lanes
TierAll Tiers
Last UpdatedMar 1, 2026
MethodologyData Methodology

Karthus vs Fizz is a moderate matchup in LoL patch 26.4. Karthus wins with a 52.2% win rate (+4.3%) over Fizz based on 24 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 Fizz 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
Fizz - 52.2% win rateFizz(52.2%)
Karthus - 52.2% win rate in this matchup
Karthus
52.2% WR
VS
Fizz vs Karthus matchup - 47.8% win rate
Fizz
47.8% WR

Who Wins the Karthus vs Fizz Matchup?

Karthus wins the Karthus vs Fizz matchup
Winner
Karthus
Matches: 24
52.2%
Win Rate
47.8%
2.6
CS / min
2.2
1,124
DMG / min
804
13,878
Gold / game
13,482
274
Heal / min
299
489
DMG Mitigated / min
601
0.6
CC / min
0.5
54.5%
Early Game WR
45.5%
50.0%
Late Game WR
50.0%

Karthus vs Fizz Matchup Summary

The Karthus vs Fizz matchup is a moderate matchup in League of Legends ranked play. Based on 24 recent matches analyzed, Karthus wins with a 52.2% win rate compared to Fizz's 47.8%, giving Karthus a 4.3 percentage point advantage. Karthus dominates at every stage — from early laning through late game team fights. This consistent advantage makes it difficult for Fizz 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 320 DMG/min — a difference that heavily influences the outcome of trades and skirmishes. Karthus has a statistical edge, but the margin is close enough that respecting Fizz's strengths is important. Trade when cooldowns are favorable, track the enemy jungler, and build toward your strongest item spikes to convert the slight advantage into a decisive lead. Understanding these matchup dynamics is essential for champion select decisions and in-game strategy when facing this lane opponent.

Karthus vs Fizz Laning Phase Breakdown

Karthus wins the laning phase against Fizz in League of Legends

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

Farming
2.6Karthus
2.2Fizz
Karthus edges out Fizz by 0.5 CS per minute — a moderate farming advantage that adds up to roughly 7 CS over a 15-minute laning phase. This translates to earlier component purchases and slightly faster power spikes for Karthus.
Damage
1,124Karthus
804Fizz
Karthus heavily out-damages Fizz by 320 DMG/min, dominating both short trades and all-in fights. Fizz 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
13,878Karthus
13,482Fizz
Karthus earns 397 more gold per game than Fizz, equivalent to roughly one additional component item. This economic edge comes from a combination of better farming, kill participation, and objective control, giving Karthus slightly faster item completions.
Utility
0.6Karthus
0.5Fizz
Both Karthus and Fizz 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
763Karthus
900Fizz
Fizz heals and mitigates 137 more damage per minute than Karthus, providing moderate extra durability. This sustain edge allows Fizz to stay in lane longer between recalls and gradually win extended wars of attrition. Consider building early grievous wounds if playing Karthus.

Best Karthus Build Against Fizz

Sorcerer's Shoes is the optimal boots choice against Fizz, providing the mobility and stats Karthus needs most in this matchup. The top-performing core items for Karthus against Fizz are Shadowflame, Rabadon's Deathcap and Blackfire Torch. This combination gives Karthus an effective balance of damage, survivability, and utility for the matchup. This build performs exceptionally well, achieving a 60.0% win rate across 5 games — well above average and making it the top item path against Fizz. Adjustments may be needed based on team compositions and game state, but this build provides the strongest foundation for the Karthus vs Fizz matchup.

Early Game vs Late Game

Early Game
Karthus
54.5%
+9.1% advantage
Karthus early game win rateKarthus54.5%
Fizz early game win rateFizz45.5%
Late Game
Karthus
50.0%
+0.0% advantage
Karthus late game win rateKarthus50.0%
Fizz late game win rateFizz50.0%

Karthus dominates the early game (first 15 minutes) with a commanding 54.5% win rate — a 9.1 percentage point lead over Fizz. 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 Fizz. 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. Fizz players should look for outplays, team-dependent strategies, and picks rather than relying on scaling to win this matchup.

Best Karthus Runes Against Fizz

Domination rune tree - Karthus primary runes vs FizzDomination
Dark Harvest - best Karthus rune vs FizzCheap Shot - best Karthus rune vs FizzSixth Sense - best Karthus rune vs FizzTreasure Hunter - best Karthus rune vs Fizz
Precision rune tree - Karthus secondary runes vs FizzPrecision
Triumph - best Karthus rune vs FizzLast Stand - best Karthus rune vs Fizz
100.0% WR

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


Karthus matchup data for League of Legends patch 26.4. 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 26.4
Opponent
Win Rate
Matches
CS/min
DMG/min
Gold/game
Early WR
Late WR
46.15%911.31,12014,20543.6%48.1%
53.75%801.41,17013,99651.4%55.8%
50.82%611.51,05713,98646.9%55.2%
29.63%541.41,01612,84637.0%22.2%
40.74%541.21,00013,57652.0%31.0%
52.83%531.31,10214,43138.9%60.0%
50.00%451.51,19013,93033.3%65.2%
40.91%451.81,24912,87530.4%52.4%
45.45%441.51,19115,81857.1%40.0%
52.50%401.41,23614,93635.3%65.2%
32.43%382.21,19113,00917.6%45.0%
34.21%381.71,17813,80943.8%27.3%
45.71%351.41,16415,70025.0%51.9%
42.86%352.31,16713,80647.4%37.5%
62.50%331.51,08914,67453.3%70.6%
48.48%331.41,17115,06972.7%36.4%
65.63%331.41,21614,02275.0%60.0%
62.50%326.51,18914,62655.6%71.4%
64.52%312.81,25315,72450.0%71.4%
48.39%312.11,17515,09744.4%50.0%
53.33%301.31,21014,87760.0%50.0%
46.67%301.41,19114,72825.0%61.1%
40.00%301.51,11813,17325.0%57.1%
44.83%291.81,24115,38344.4%45.0%
39.29%282.51,07512,06426.7%53.9%
35.71%287.11,29014,72144.4%31.6%
57.14%287.11,29715,28041.7%68.8%
51.85%271.41,22814,68446.7%58.3%
44.00%251.61,11913,32450.0%40.0%
72.00%256.31,27713,05966.7%80.0%
56.52%241.41,19115,35140.0%69.2%
52.17%242.61,12413,87854.5%50.0%
43.48%243.21,39917,31433.3%45.0%
63.64%231.61,13614,34070.0%58.3%
52.17%231.81,07112,13052.9%50.0%
50.00%222.71,11414,47033.3%61.5%
54.55%221.41,01012,48353.9%55.6%
63.16%216.71,13614,48055.6%70.0%
52.38%211.81,18014,64760.0%45.5%
31.58%191.51,14615,29033.3%30.8%
72.22%181.51,11315,76785.7%63.6%
38.89%186.61,52715,77250.0%30.0%
55.56%187.01,22214,45550.0%62.5%
55.56%186.41,39114,92450.0%58.3%
35.29%171.21,07613,70712.5%55.6%
64.71%171.31,09314,46150.0%72.7%
58.82%176.81,21213,67240.0%66.7%
25.00%166.11,41913,99733.3%14.3%
37.50%164.795710,61950.0%25.0%
50.00%152.61,40416,46460.0%44.4%
28.57%151.71,34113,51250.0%12.5%
26.67%153.01,16415,02350.0%18.2%
50.00%146.61,29914,19033.3%80.0%
50.00%146.91,25614,70960.0%44.4%
21.43%141.91,35614,81625.0%20.0%
42.86%140.994312,12740.0%50.0%
42.86%141.395413,81180.0%22.2%
64.29%141.21,15415,28666.7%62.5%
61.54%132.71,14112,85550.0%80.0%
53.85%136.41,42014,71957.1%50.0%
30.77%131.81,06312,25525.0%40.0%
30.77%136.01,07211,46337.5%20.0%
54.55%136.81,35716,646100.0%44.4%
61.54%132.41,13512,87742.9%83.3%
66.67%133.11,26416,01250.0%83.3%
66.67%125.81,29515,32833.3%77.8%
72.73%111.11,27216,663100.0%70.0%
45.45%117.01,24514,82250.0%42.9%
72.73%116.01,33313,29583.3%60.0%
54.55%112.21,17715,16533.3%62.5%
36.36%115.61,23516,02150.0%33.3%
40.00%106.01,13310,07637.5%50.0%
50.00%101.81,21715,398100.0%37.5%
40.00%104.51,10311,5370.0%80.0%
40.00%106.41,13011,07950.0%33.3%
22.22%91.51,22214,7250.0%28.6%
22.22%96.11,35912,4630.0%40.0%
44.44%90.91,26115,74633.3%50.0%
55.56%97.11,17415,10633.3%66.7%
62.50%87.31,18713,08480.0%33.3%
37.50%84.01,18314,7410.0%42.9%
25.00%81.91,16715,05133.3%20.0%
50.00%86.21,02912,25450.0%50.0%
57.14%77.81,10213,81460.0%50.0%
42.86%72.31,11414,1230.0%50.0%
28.57%70.71,44114,4700.0%28.6%
42.86%76.51,28816,0510.0%50.0%
42.86%77.01,11310,61742.9%0.0%
71.43%76.01,18712,40450.0%100.0%
66.67%61.11,09913,68366.7%66.7%
50.00%64.298014,2740.0%50.0%
83.33%62.61,11612,36066.7%100.0%
50.00%67.21,45614,141100.0%25.0%
83.33%66.797811,80075.0%100.0%
50.00%63.81,02213,025100.0%40.0%
33.33%61.71,24513,26050.0%25.0%
83.33%66.11,39813,26875.0%100.0%
66.67%67.41,17914,684100.0%50.0%
50.00%65.81,14812,20266.7%33.3%
50.00%66.31,10511,58650.0%50.0%
20.00%51.91,15715,63950.0%0.0%
40.00%51.31,18915,25350.0%33.3%
60.00%53.71,42612,66633.3%100.0%
50.00%56.11,47613,4680.0%66.7%
0.00%55.91,43715,4430.0%0.0%
60.00%53.21,30714,5490.0%100.0%
20.00%52.51,32215,7600.0%25.0%
40.00%53.51,36215,0670.0%50.0%
60.00%57.88979,91833.3%100.0%
0.00%57.285311,8850.0%0.0%
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Karthus vs Fizz - Frequently Asked Questions

How does Karthus do against Fizz in League of Legends?

Karthus wins the Karthus vs Fizz matchup with a 52.2% win rate compared to Fizz's 47.8%, a 4.3 percentage point difference. This data is based on 24 recent ranked games in patch 26.4.

How does Karthus do against Fizz in the early game?

In the early game, Karthus has the advantage against Fizz with a 54.5% win rate versus 45.5%. 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 Fizz in the late game?

In the late game, Karthus takes over the Karthus vs Fizz 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 Fizz matchup?

Karthus wins the matchup against Fizz with a 52.2% win rate in League of Legends patch 26.4. The 4.3 percentage point advantage means Karthus is moderately favored in this lane matchup based on 24 games analyzed.

What is the best Karthus build against Fizz?

The best Karthus build against Fizz includes Shadowflame, Rabadon's Deathcap, Blackfire Torch with Sorcerer's Shoes. This build achieves a 60.0% win rate in the matchup. Check the matchup breakdown above for the full item path and build order.

What are the best Karthus runes against Fizz?

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

Does Karthus counter Fizz?

Yes, Karthus has a favorable matchup against Fizz with a 52.2% win rate. Karthus has a solid advantage over Fizz in lane based on current patch 26.4 data.

How do I play Karthus against Fizz?

When playing Karthus against Fizz, 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.