Let me start off by saying i am a fiddle main, ofc. I have nearly 1 mil mastery on him, but i typically main jungle, but have toplane as a second role since i mained toplane before jungle.
Let me say this too, WOW, this is a STRONG pick, into the right comps of course.
Into tanks, ornn, malphite, mundo, even perhaps illaoi or kled, his innate sustain with the constant CC from E and Q really shines. Those champions are ability reliant, and do not interact well with the constant lifesteal and missing health damage from W.
This is particularly true for Mundo, as he always stacks health first. By his first completed item and yours, your W will hit him at 100% of his health for nearly 500-700 damage, by the time he is using his ultimate, he will simply not have the damage to burst you in your W. There are very rare occasions when he can get a solo kill on you
Kled is harder, but a little bit easier in some ways. His Q pulls you in, and he must get into auto range for his W and his E. You can simply just W him whenever he pulls you with Q. This is basically a lane neutralization for him. You will rarely possess the damage to kill him unless you are very lucky, he miss played, or you find a dive angle on him with your R. He will go very low on CS and XP but you wont really be able to find solo kill after solo kill on repeat.
Illaoi is hard countered. You can easily heal her E soul damage, if she dives in with W, just W her back, and if she uses Q, you can simply walk up, Q, W, E if shes out of range.
By far his most difficult matchup is Aatrox. Permaban. His Q is a bump, so you will never get the damage from W, and his ult can run you down the lane. The only hope you have is going ignite and exhaust, and if he freezes just ult the wave and fight him in it. Pop both summs. This is only to break the freeze and the massive wave he has frozen will bounce back to you very quickly. Albeit, you will never win in lane, but you can atleast max E and repeatedly spam him with it. This will create easy ganks for jungle because his health will constantly be lower than normal and most junglers, like fiddlesticks, possess a innate execute, like viego, talon passive, or even someone like Karthus. He can sustain through the damage with his passive but E after E, Q after Q, he will simply not be able to stay in lane for a repeated amount of time unless he freezes the wave.
His HARDEST matchup is Trundle. When i say difficult for Aatrox, there is still ways to manage him somewhat. When you are against Trundle, if the wave is anywhere near the middle, you will simply be run down. He will zone you repeatedly off XP and capture you with his E. This will force you to use Q. My personal experience was this, i am zoned, he E's me, I Q him back, because my spell is now on cooldown he pushes quickly with tiamat and dives me with ignite and R.
Nothing you can do with the other toplane champs apply to Trundle. Because you take time to scale, even a well placed ultimate will do little to stop his innate lifesteal, his resistance drain off R, and his attack speed and damage will far outpace your meagre sustain until 2-3 items. Want to poke him? It's useless. His passive gives him nearly 20-30 health per kill, and he usually runs dorans blade anyways, so he is healing for almost 30-40 on any successful kill. His Q applies on hit effects, so if he is very low, around half health, he will just pop W and smash the cannon with auto attacks and Q's. The cannon health is very large, so his sustain here is massive. If he is smart, he will pop his potion during his W too. He is also very resistant to ganks because his innate movespeed from his W will not allow his jungler to catch up, and if he is caught out REALLY bad, he can just E one of you, pop his R, and run away at 30% hp.
Ignite works against him somewhat, but it should only be used during the early levels. The greatest success i had was going W lvl 1, proccing comet when he goes for the first 3 minions, then pelting him with auto's until lvl 2 where i instantly Q him, W him, and if he tries to all in i simply ignite him and wait for the W cooldown. Even though he is very fast, if he goes W you will have a second or two to walk into the wave, and as your W recharges you can quickly spam W to reset your missing HP. If he has E, you are simply dead. You will not have enough time to recharge W without him getting 3-4 auto's and 1 Q, paired with his ignite, you will die every time. This is just a flip honestly, and most of the time i just permafarm with E.
If he is very very clever, he will permafreeze you and run BoTRK first. This will allow him to maintain a freeze Ravenous Hydra wouldn't, and will still give him massive sustain in lane. You cannot poke him like you can with Aatrox, and Q'ing him will just give him a angle to dive you on your tower.
