MacroMind matchup data: real ranked games, not opinions
Kai'Sa vs Sivir
What is Kai'Sa's win rate vs Sivir?
In ADC, Kai'Sa wins 49% against Sivir across 6,707 observed ranked games.
Global ranked sample: games from every region and every rank pooled together, not one server's stats. Data runs through patch 26.12; curves updated 2026-08-07.
By 15 minutes the median game has Kai'Sa behind by 66 gold.
Kai'Sa at 15:00
- Gold: -66
- CS: -4
- XP: -56
Typical gap to Sivir, from 6,669 games that reached 15:00.
Does Kai'Sa counter Sivir?
Too close to call. Kai'Sa sits at 49% over 6,707 games, so neither pick counters the other here. The lane goes to whoever wins the spots below, like the gold lead at 10:00 or staying alive until 15:00, so play for those and let the pick argument go.
How to beat Sivir as Kai'Sa
When Kai'Sa is ahead in gold at 10:00, this matchup runs 60% over 3,244 games; behind, it drops to 39% over 3,462.
| The spot | Win rate | Games |
|---|---|---|
| Ahead in gold at 10:00 | 60% | 3,244 |
| Behind in gold at 10:00 | 39% | 3,462 |
| First blood | 55% | 3,832 |
| +kills at 10:00 | 59% | 2,985 |
| +CS at 10:00 | 57% | 2,777 |
| 0 deaths at 10:00 | 56% | 1,720 |
| 0 deaths at 15:00 | 66% | 666 |
The median first death in this lane comes at 5:27; the level 6 spike lands around 7:36. Respect the all-in window until your spike is online.
What does Kai'Sa build in ADC?
Into Sivir specifically, Kai'Sa finishes Kraken Slayer first most often: 49.0% over 2,384 games of this matchup.
The most-finished core in this exact matchup is Kraken Slayer, Guinsoo's Rageblade, Dusk and Dawn: 51.5% across 719 games.
The most-finished Kai'Sa core is Kraken Slayer, Guinsoo's Rageblade, Dusk and Dawn: 53.5% across 26,866 games when all three got done. All matchups, patches 26.1-26.12.
Most games start Doran's Blade + Health Potion; the first finished item is usually Kraken Slayer (83,293 games).
Skill plan: Kai'Sa players max Q first and take Q at level 1.