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.
Try to stay away from walls. Ornn is much less strong if he cannot stun you.
Attack Ornn to keep him from creating items in lane.
The stat comparisons provided here show some strategic Jax vs. Ornn matchup stats that can help us explain the differences and similarities between the pair. Jax’s KDA ratio ([kills + assists] / deaths) of NaN is more than Ornn’s ratio of NaN, highlighting that Jax may be more central to his team's team fighting effectiveness than Ornn..
Jax usually has a slightly larger longest killing spree than his opponent does. Commonly, he takes a similar amount of damage to Ornn. This typically indicates differing health capacities, yet it can also show that the one champ has less agility and thus is not able to escape additional harm when engaged or poked.
Both League of Legends champions are great. Both have their strengths, weaknesses, and counters. In League's current meta, Jax usually fairs equally well when trying to fight Ornn, with a 49.1% win rate. As a result, Jax makes an ok counter to Ornn.
While Jax does have a lower win rate compared to Ornn, when facing one another, Jax also has a greater learning curve that makes him a more difficult character to learn. You should be careful when picking Jax into Ornn.
Furthermore, Jax also has some amount of utility and CC, a similar amount to Ornn. This often makes her just as valuable during teamfights, especially when fighting champions with a ton of burst damage.
While there isn't a single best champion overall in League of Legends, in Jax vs Ornn matchups, Ornn is the better champ with a similar win rate, similar champion depth, and a similar amount of utility to help out your allied champions during late stage team fights.
Jax is a somewhat poor counter to Ornn. You will do well by focussing your gameplay on keeping up your CS and destroying objectives. If you can do that, you should hold your own as Jax against Ornn.
To truly master Jax to counter Ornn during both the early game and mid / late game phases of League of Legends, you should continue reading to learn a few extra lessons on this matchup. If you mind the build and suggestions presented above, you should increase your win rate by a lot and be that much closer to League of Legends pro players.
Jax most often accumulates a similar amount of CS compared to Ornn. Champions who typically don't take many minion kills usualy don't require much CS to be effective, such as support champions. These kinds of champions are able to scale properly off of their abilities and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, often have to have many items to be effective. In either situation, try to surpass the numbers shown here to do well.
The top items to use in your Jax versus Ornn build include Trinity Force, Titanic Hydra, and Sundered Sky. When Jax included at least these three pieces in his build, he did a lot better when fighting Ornn than with many other common builds. In fact, Jax boasted an average win rate of 49.1% when countering Ornn with this counter build.
To have the greatest likelihood of annihilating Ornn as Jax, Jax players should use the Grasp of the Undying, Demolish, Second Wind, Unflinching, Biscuit Delivery, and Cosmic Insight runes from the Resolve and Inspiration rune sets. Of all the rune builds we have analyed for Jax vs Ornn counters, this mix of runes resulted in the best win rate. Moreover, these runes provided a 49.1% winrate overall.
If you would like to see Jax versus Ornn tips and counter stats for a a particular division, please select one from the selection menu shown above. By default, the stats and strategies given are calculated using every game completed with both champions.