MacroMind matchup data — real ranked games, not opinions
Jax vs Kayn
How often does Jax beat Kayn in Jungle?
Jax into Kayn in Jungle: 48% observed win rate across 1,296 ranked games. Counted from real matches, and every number here shows its sample size.
By 15 minutes the median game has Jax behind by 86 gold.
Does Jax counter Kayn?
Too close for a counter call: Jax sits at 48% over 1,296 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 Kayn: the Jax game plan
A 300-gold lead at 10:00 puts Jax at 57% across 610 games. Flip the lead and Jax falls to 39% across 686.
| The spot | Win rate | Games |
|---|---|---|
| 300 gold up at 10:00 | 57% | 610 |
| 300 gold down at 10:00 | 39% | 686 |
| First blood | 54% | 811 |
| +kills at 10:00 | 56% | 514 |
| +CS at 10:00 | 57% | 484 |
| 0 deaths at 10:00 | 60% | 390 |
| 0 deaths at 15:00 | 68% | 165 |
Someone usually dies here around 6:45 in the median game, and level 6 lands near 7:24. Until your spike is online, respect the all-in.
Jax's Jungle build, with receipts
Into Kayn specifically, Jax finishes Trinity Force first most often: 49.6% over 371 games of this matchup.
The most-finished core in this exact matchup is Trinity Force, Sundered Sky, Zhonya's Hourglass: 53.9% across 89 games.
The most-finished Jax core is Trinity Force, Sundered Sky, Zhonya's Hourglass: 58.9% across 2,303 games when all three got done. All matchups, patches 16.1-16.12.
Most games start Gustwalker Hatchling + Health Potion; the first finished item is usually Trinity Force (9,957 games).
Skill plan: Jax players max W first and take E at level 1.