Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Just to get this out of the way. this is my first build so please don't get all crazy on me. Although i would appreciate some suggestions if you have any. this build i made is what I've been using for a while and i have been doing very well with it. basically i just took some of what i thought were some weak points ind jax and got the best item to defend against it. I got madred's blood razor because not only is it great for your dps. But also it makes killing a tank a breeze. Also i bought wits end for the annoying casters that always seem to stun me. But with wits end's passive (and the attack speed that jax has) casters wont be able to stand a chance because they are out of mana VERY quickly. i bring phage in there because it gives a nice little boost to health and also it makes it so most people cant run away from you. You have to remember 1v1 is jax at his almost no one can beat jax at 1v1 and if you have phage it just insures that your enemy that your owning cant run away.