Jax benefits greatly from items that have both Ability Power and Attack Damage such as Guinsoo's Rageblade and Hextech Gunblade.
Jax can Leap Strike to friendly units, including wards. You can use them to plan your escape.
Stay spread out to minimize the impact of Lee Sin's ultimate, Dragon's Rage.
Lee Sin relies heavily on following up with his abilities. Use disables to prevent him from chaining together his abilities and attacks.
Lee Sin has powerful tools to combat physical damage in Iron Will and Cripple but he is still vulnerable to magic damage.
The stats provided here emphasize some important Jax against K'Sante counter stats that can help us understand the differences and similarities between this set of champs. Jax’s KDA ratio ([kills + assists] / deaths) of NaN is more than K'Sante’s KDA ratio of NaN, highlighting that Jax may be more central to his team's team fighting effectiveness than K'Sante..
Jax normally has a similar longest killing spree as his matchup does. Commonly, he takes a similar amount of damage to K'Sante. This commonly reflects differing health capacities, but it can also illustrate that the one champ has less mobility and thus is not able to kite away from further harm when engaged or poked.
Both LoL champs are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Jax usually wins when facing off against K'Sante, with a 52.4% win rate. Therefore, Jax makes a good counter for K'Sante.
While Jax does have a higher winrate compared to K'Sante, when facing one another, Jax also has a much lower difficulty level that makes him a less time consuming champ to pick up and master. You should be be fine when picking Jax into K'Sante.
Additionally, Jax also has some amount of utility and CC, a similar amount to K'Sante. This makes her just as valuable during teamfights, especially when trying to counter champions with a ton of burst damage.
While there isn't one best champion for every situation in League of Legends, in Jax vs K'Sante matchups, Jax is the better champion with a noticably higher win rate, less champion complexity, and a similar amount of utility to help out your teammates during team fights.
Jax is a good counter for K'Sante. You will do well by focussing your actions on maximizing your gold and cs and destroying objectives. If you do that, you should be able to stand on your own as Jax against K'Sante.
If you would like to truly master Jax in order to counter K'Sante during both the early game and mid / late game phases of League of Legends, you should keep reading to pick up a few extra tricks and insights into this matchup. If you mind the build and suggestions presented above, you will increase your win rate significantly and be closer to League of Legends pro players.
Jax on average racks up a similar amount of CS compared to K'Sante. Champs who typically don't earn much CS usualy don't have to have much CS to be effective, such as sup champs. These kinds of champions are able to scale properly off of their skills, stats, and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, typically have to have many items to be effective. In either case, try to do better than the values shown on this page to do well.
The ideal items to prioritize in your Jax versus K'Sante build include Sterak's Gage, Trinity Force, and Blade of The Ruined King. When Jax included at least these three items in his build, he did significantly better when facing K'Sante than with most other common builds. In fact, Jax boasted an average winrate of 52.4% when countering K'Sante with these items in his kit.
To have the highest likelihood of annihilating K'Sante as Jax, you should take the Lethal Tempo, Triumph, Legend: Alacrity, Last Stand, Cosmic Insight, and Magical Footwear runes from the Precision and Inspiration rune sets. Out of all the runes players used for Jax vs K'Sante counter picks, this combination of runes resulted in the best win rate. Moreover, these runes provided a 52.4% winrate overall.
If you need to see Jax versus K'Sante tips and counter builds for a a distinct player tier, feel free to choose one from the selection menu shown above. By default, the stats and build suggestions displayed are calculated using every game completed with both champs.