MacroMind matchup data — real ranked games, not opinions
Karthus vs Master Yi
How often does Karthus beat Master Yi in Jungle?
Karthus into Master Yi in Jungle: 48% observed win rate across 688 ranked games. Counted from real matches, and every number here shows its sample size.
By 15 minutes the median game has Karthus behind by 38 gold.
Does Karthus counter Master Yi?
Too close for a counter call: Karthus sits at 48% over 688 games, inside the noise band. On this sample neither pick counters the other — the swing lives in the conditions below, so play the side you know better.
Beating Master Yi: the Karthus game plan
A 300-gold lead at 10:00 puts Karthus at 58% across 373 games. Flip the lead and Karthus falls to 37% across 315.
| The spot | Win rate | Games |
|---|---|---|
| 300 gold up at 10:00 | 58% | 373 |
| 300 gold down at 10:00 | 37% | 315 |
| First blood | 55% | 326 |
| +kills at 10:00 | 59% | 237 |
| +CS at 10:00 | 54% | 468 |
| 0 deaths at 10:00 | 56% | 122 |
| 0 deaths at 15:00 | 71% | 41 |
Someone usually dies here around 5:18 in the median game, and level 6 lands near 6:45. Until your spike is online, respect the all-in.
Karthus's Jungle build, with receipts
Into Master Yi specifically, Karthus finishes Blackfire Torch first most often: 50.0% over 212 games of this matchup.
The most-finished core in this exact matchup is Blackfire Torch, Shadowflame, Rabadon's Deathcap: 49.0% across 49 games.
The most-finished Karthus core is Blackfire Torch, Shadowflame, Rabadon's Deathcap: 53.6% across 1,882 games when all three got done. All matchups, patches 16.1-16.12.
Most games start Scorchclaw Pup + Health Potion; the first finished item is usually Blackfire Torch (8,818 games).
Skill plan: Karthus players max Q first and take Q at level 1.