Karthusvs Rengar
Karthus vs Rengar is a decisive matchup in LoL patch 26.14. Karthus wins with a 57.1% win rate (+14.3%) over Rengar based on 14 games. Karthus wins the early laning phase while Rengar scales better into the late game. Below you'll find the best Karthus build, runes, laning stats, and strategies for the Karthus vs Rengar 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 the Karthus vs Rengar Matchup?
Karthus vs Rengar Matchup Summary
The Karthus vs Rengar matchup is a decisive matchup in League of Legends ranked play. Based on 14 recent matches analyzed, Karthus wins with a 57.1% win rate compared to Rengar's 42.9%, giving Karthus a 14.3 percentage point advantage. Game phase dynamics play a critical role here: Karthus controls the early laning stage, but Rengar outscales as the game goes longer. The matchup shifts dramatically depending on game length — Karthus needs to press advantages before Rengar reaches their power spikes, while Rengar should focus on safe farming and hitting key item breakpoints. The most significant statistical gap is in sustain, where Rengar leads by 398 HP/min — a difference that heavily influences the outcome of trades and skirmishes. Karthus players can confidently pick into Rengar and play aggressively from level 1. Look to establish lane dominance early through favorable trades and zone Rengar 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 Rengar Laning Phase Breakdown
Karthus is favored during the laning phase against Rengar, winning 3 out of 5 key stat categories. Karthus holds advantages in farming, damage and crowd control, making them the stronger laner in this matchup.
Best Karthus Build Against Rengar
Sorcerer's Shoes is the optimal boots choice against Rengar, providing the mobility and stats Karthus needs most in this matchup. The top-performing core items for Karthus against Rengar are Liandry's Torment, Shadowflame and Malignance. This combination gives Karthus an effective balance of damage, survivability, and utility for the matchup. This build performs exceptionally well, achieving a 100.0% win rate across 1 games — well above average and making it the top item path against Rengar. Adjustments may be needed based on team compositions and game state, but this build provides the strongest foundation for the Karthus vs Rengar matchup.
Early Game vs Late Game
Karthus80.0%
Rengar20.0%Karthus44.4%Rengar55.6%Karthus dominates the early game (first 15 minutes) with a commanding 80.0% win rate — a 60.0 percentage point lead over Rengar. This lopsided early game means Karthus can dictate the pace of the lane from level 1, controlling trades, wave state, and river priority.
Rengar is far superior in the late game (25+ minutes), boasting a 55.6% win rate — 11.1 points above Karthus. Extended games heavily favor Rengar, whose kit and scaling make them a dominant force in team fights and objective control.
This matchup features a dramatic power shift: Karthus must aggressively press their early advantage and close out the game before Rengar reaches their scaling breakpoints. If Rengar survives the laning phase without falling too far behind, the matchup flips in their favor. Dragon and Rift Herald control are pivotal — the team that secures early objectives can snowball or buy time to scale.
Best Karthus Runes Against Rengar
Domination
Sorcery
Running Domination primary with Sorcery secondary allows Karthus to press their advantage against Rengar, amplifying the strengths that make this a favorable matchup.
Karthus matchup data for League of Legends patch 26.14. 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.
Opponent | Win Rate | Matches | CS/min | DMG/min | Gold/game | Early WR | Late WR |
|---|---|---|---|---|---|---|---|
| 50.00% | 34 | 1.5 | 1,210 | 14,460 | 54.5% | 47.8% | |
| 53.85% | 26 | 1.7 | 1,107 | 13,353 | 75.0% | 44.4% | |
| 65.38% | 26 | 1.6 | 1,213 | 14,129 | 62.5% | 66.7% | |
| 42.86% | 21 | 1.6 | 1,273 | 14,869 | 62.5% | 30.8% | |
| 57.14% | 21 | 6.7 | 1,272 | 14,858 | 33.3% | 66.7% | |
| 66.67% | 21 | 6.9 | 1,369 | 14,650 | 75.0% | 61.5% | |
| 60.00% | 20 | 6.2 | 1,547 | 15,163 | 37.5% | 75.0% | |
| 47.37% | 19 | 2.3 | 1,299 | 12,041 | 37.5% | 54.5% | |
| 36.84% | 19 | 6.3 | 1,222 | 12,598 | 50.0% | 30.8% | |
| 63.16% | 19 | 1.3 | 1,189 | 12,550 | 66.7% | 61.5% | |
| 44.44% | 18 | 1.5 | 984 | 12,231 | 28.6% | 54.5% | |
| 41.18% | 17 | 1.3 | 1,174 | 13,393 | 50.0% | 36.4% | |
| 64.71% | 17 | 1.4 | 1,133 | 13,538 | 60.0% | 66.7% | |
| 58.82% | 17 | 6.1 | 1,296 | 12,023 | 28.6% | 80.0% | |
| 31.25% | 16 | 1.1 | 998 | 10,234 | 22.2% | 42.9% | |
| 37.50% | 16 | 1.2 | 1,036 | 11,549 | 22.2% | 57.1% | |
| 56.25% | 16 | 1.4 | 1,291 | 15,822 | 33.3% | 61.5% | |
| 53.33% | 15 | 3.8 | 1,155 | 13,363 | 71.4% | 37.5% | |
| 57.14% | 14 | 1.5 | 1,189 | 16,770 | 80.0% | 44.4% | |
| 71.43% | 14 | 1.1 | 1,317 | 14,691 | 60.0% | 77.8% | |
| 38.46% | 13 | 2.1 | 1,364 | 16,137 | 50.0% | 33.3% | |
| 69.23% | 13 | 1.7 | 1,109 | 14,294 | 50.0% | 77.8% | |
| 38.46% | 13 | 1.6 | 1,250 | 13,792 | 66.7% | 30.0% | |
| 38.46% | 13 | 1.9 | 1,012 | 13,363 | 40.0% | 37.5% | |
| 50.00% | 12 | 1.6 | 1,101 | 11,974 | 50.0% | 50.0% | |
| 50.00% | 12 | 1.3 | 1,075 | 13,070 | 60.0% | 42.9% | |
| 33.33% | 12 | 5.8 | 1,242 | 13,035 | 14.3% | 60.0% | |
| 36.36% | 11 | 1.2 | 1,173 | 13,470 | 40.0% | 33.3% | |
| 45.45% | 11 | 1.3 | 1,270 | 13,006 | 66.7% | 37.5% | |
| 45.45% | 11 | 1.4 | 1,198 | 14,745 | 50.0% | 44.4% | |
| 72.73% | 11 | 1.7 | 1,133 | 12,272 | 75.0% | 71.4% | |
| 40.00% | 10 | 6.4 | 1,245 | 14,255 | 50.0% | 37.5% | |
| 50.00% | 10 | 1.2 | 1,072 | 11,237 | 25.0% | 66.7% | |
| 60.00% | 10 | 3.8 | 1,326 | 16,244 | 100.0% | 55.6% | |
| 50.00% | 10 | 7.0 | 1,119 | 13,927 | 33.3% | 57.1% | |
| 50.00% | 10 | 6.1 | 1,271 | 14,647 | 0.0% | 62.5% | |
| 66.67% | 9 | 1.7 | 1,147 | 15,247 | 100.0% | 57.1% | |
| 77.78% | 9 | 6.6 | 1,162 | 14,764 | 66.7% | 83.3% | |
| 37.50% | 8 | 5.9 | 1,039 | 11,392 | 0.0% | 100.0% | |
| 87.50% | 8 | 4.1 | 1,125 | 12,351 | 75.0% | 100.0% | |
| 57.14% | 7 | 1.7 | 1,407 | 16,439 | 33.3% | 75.0% | |
| 57.14% | 7 | 6.8 | 1,189 | 13,558 | 50.0% | 60.0% | |
| 28.57% | 7 | 5.7 | 809 | 9,614 | 40.0% | 0.0% | |
| 71.43% | 7 | 5.3 | 1,423 | 15,641 | 0.0% | 83.3% | |
| 50.00% | 6 | 7.8 | 1,516 | 10,970 | 75.0% | 0.0% | |
| 16.67% | 6 | 6.8 | 1,068 | 9,349 | 25.0% | 0.0% | |
| 16.67% | 6 | 7.0 | 1,143 | 13,263 | 33.3% | 0.0% | |
| 66.67% | 6 | 5.7 | 1,156 | 11,144 | 0.0% | 100.0% | |
| 50.00% | 6 | 2.5 | 1,110 | 11,409 | 75.0% | 0.0% | |
| 66.67% | 6 | 7.5 | 1,511 | 18,224 | 0.0% | 80.0% | |
| 60.00% | 5 | 5.6 | 1,047 | 12,658 | 100.0% | 50.0% | |
| 60.00% | 5 | 1.4 | 1,361 | 15,802 | 0.0% | 75.0% | |
| 40.00% | 5 | 2.1 | 1,186 | 10,480 | 33.3% | 50.0% | |
| 60.00% | 5 | 2.3 | 1,128 | 14,944 | 0.0% | 75.0% | |
| 20.00% | 5 | 5.8 | 1,755 | 14,344 | 50.0% | 0.0% | |
| 40.00% | 5 | 7.0 | 1,629 | 11,364 | 66.7% | 0.0% | |
| 80.00% | 5 | 3.3 | 1,369 | 13,229 | 100.0% | 66.7% | |
| 40.00% | 5 | 3.2 | 1,676 | 13,066 | 50.0% | 33.3% | |
| 60.00% | 5 | 1.1 | 1,231 | 14,729 | 0.0% | 75.0% | |
| 100.00% | 2 | 1.5 | 1,218 | 14,599 | 100.0% | 100.0% | |
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Karthus vs Rengar - Frequently Asked Questions
How does Karthus do against Rengar in League of Legends?
Karthus wins the Karthus vs Rengar matchup with a 57.1% win rate compared to Rengar's 42.9%, a 14.3 percentage point difference. This data is based on 14 recent ranked games in patch 26.14.
How does Karthus do against Rengar in the early game?
In the early game, Karthus has the advantage against Rengar with a 80.0% win rate versus 20.0%. 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 Rengar in the late game?
In the late game, Rengar takes over the Karthus vs Rengar matchup with a 55.6% win rate compared to 44.4%. Rengar scales better into team fights and objective contests after 25 minutes.
Who wins the Karthus vs Rengar matchup?
Karthus wins the matchup against Rengar with a 57.1% win rate in League of Legends patch 26.14. The 14.3 percentage point advantage means Karthus is significantly favored in this lane matchup based on 14 games analyzed.
What is the best Karthus build against Rengar?
The best Karthus build against Rengar includes Liandry's Torment, Shadowflame, Malignance with Sorcerer's Shoes. This build achieves a 100.0% 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 Rengar?
The best Karthus runes against Rengar use the Domination primary tree with Sorcery secondary. This rune setup achieves a 60.0% win rate in the Karthus vs Rengar matchup. See the full rune breakdown in the matchup comparison above.
Does Karthus counter Rengar?
Yes, Karthus has a favorable matchup against Rengar with a 57.1% win rate. Karthus strongly counters Rengar in lane based on current patch 26.14 data.
How do I play Karthus against Rengar?
When playing Karthus against Rengar, 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.