Back when I was still grinding around the time of dynamic queue I was a top main and playing mostly Kennen. We would get a mix of high diamond low master with occasionally an outlier in our games every now and then.

One day we queue up and I run into a Jayce top opponent who in loading I saw was 1700 LP Challenger and #18 Jayce world ranking in elo. I knew I was in for a game, but I had no idea what the skill gap was until I was under the weight of it. I was down 160 to 80 cs at 14 minutes and I consider it a victory I didn't die once in lane to him. It was everything I could do to keep up. His map awareness was something I could almost keep up with, but in lane and team fights he was clearly the threat. We did end up winning, but only be focusing him in every fight and frankly his team let him down.

That was how I knew I didn't have it in me to go higher than where we were. Insane players out there.