How to deal with a Nasus in lane
Recently played a ranked match vs Nasus as Renekton. I knew I would have to harass and shove lane into tower as hard as I could, so I did. I even got the first kill and tower (After the 15 minute mark since I didn't want to let him farm inbetween 1st and 2nd tower area). He had around 60 stacks at the 10 min mark and less than 200 around the 20 min mark. Our jungler ganked once and got me a kill (As I recall it) while their jungler DID gank a couple of times (They had a WW) and got Nasus two kills (Cause S5 WW is OP). Now, we were doing fine, we had more turrets and were pressuring mid but I kept telling them that I couldn't stay in mid to help since Nasus was going to free-farm. I was about to leave to stop Nasus free-farming and suddenly a team fight breaks out and we lose it. I had to retreat and let Nasus free farm and he ended up coming back a monster and completely wrecked us.
The jungler and mid laner both blamed me for everything, even though I tried all I could.
So I want to ask, how do I prevent him from free-farming if I have to help out in team fights? I think one way would be to simply finish the game or reach inhib so Nasus is forced to back, but our team didn't have as much sieging power. We couldn't focus him in team fights either since we had to kill Ashe, Jayce AND WW since they do a lot of burst damage. But we end up blowing all our CC and skills on them while Nasus comes in as the clean up crew killing as all with his Q.
EDIT: Btw, if you're going to recommend SoloRenektonTop, just know that I've already watched his videos and have found one on Nasus vs Renekton BUT, the Nasus in that match was the dumbest Nasus I've ever seen. By the 10 minute mark, he was at 27 stacks and going 0-4 because all he did was overextended, waste his Q on harassing Renek and throwing his AOE DOT a whole bunch of times.
EDIT2: Please note that I need tips on how to deal with him as Renekton, especially in teamfights. I might think of picking up Malphite specifically to counter him, but for now I just want to know how to deal with him as Renekton (During team fights)



